City Office REIT (CIO) 10-K 4 Mar 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Mar. 01, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	CIO
Entity Registrant Name	City Office REIT, Inc.
Entity Central Index Key	1,593,222
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		12,835,098
Entity Public Float			$ 130.5

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Real estate properties, cost
Land	$ 90,205	$ 66,204
Building and improvement	256,317	132,964
Tenant improvement	35,069	27,773
Furniture, fixtures and equipment	198	198
Real estate properties, gross	381,789	227,139
Accumulated depreciation	(26,909)	(15,311)
Real estate properties, net	354,880	211,828
Cash and cash equivalents	8,138	34,862
Restricted cash	15,176	11,093
Rents receivable, net	14,382	7,981
Deferred financing costs, net of accumulated amortization	3,393	2,901
Deferred leasing costs, net of accumulated amortization	5,074	2,618
Acquired lease intangibles assets, net	40,990	29,391
Prepaid expenses and other assets	1,567	832
Total Assets	443,600	301,506
Liabilities:
Debt	344,671	189,940
Accounts payable and accrued liabilities	8,745	4,080
Deferred rent	2,653	2,212
Tenant rent deposits	2,178	1,862
Acquired lease intangibles liability, net	2,292	606
Dividend distributions payable	3,663	3,571
Earn-out liability	5,678	8,000
Total Liabilities	$ 369,880	$ 210,271
Commitments and Contingencies (Note 10)
Equity:
Common stock, $0.01 par value, 100,000,000 shares authorized, 12,517,777 and 12,279,110 shares issued and outstanding	$ 125	$ 123
Additional paid-in capital	95,318	91,308
Accumulated deficit	(29,598)	(11,320)
Total Stockholders' Equity	65,845	80,111
Operating Partnership unitholders' non-controlling interests	8,550	11,878
Non-controlling interests in properties	(675)	(754)
Total Equity	73,720	91,235
Total Liabilities and Equity	$ 443,600	$ 301,506

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	12,517,777	12,279,110
Common stock, shares outstanding	12,517,777	12,279,110

Consolidated and Combined State

Consolidated and Combined Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues:
Rental income	$ 48,009
Expense reimbursement	5,808
Other	1,235
Total Revenues	55,052
Operating Expenses:
Property operating expenses	20,420
Acquisition costs	2,959
Stock-based compensation	1,907
General and administrative	1,821
Base management fee	1,302
External advisor acquisition	492
Depreciation and amortization	21,624
Total Operating Expenses	50,525
Operating Income	4,527
Interest Expense:
Contractual interest expense	(10,607)
Amortization of deferred financing costs	(746)
Interest expense, net	(11,353)
Change in fair value of earn-out	(841)
Net income / (loss)	(7,667)
Less: Net (income)/loss attributable to non-controlling interests in properties	(500)
Less: Net loss attributable to Operating Partnership unitholders' non-controlling interests	1,576
Net loss attributable to stockholders	$ (6,591)
Net loss per share:
Basic and diluted	$ (0.53)
Weighted average common shares outstanding:
Basic and diluted	12,409
Dividend distributions declared per common share and unit	$ 0.940
Predecessor [Member]
Revenues:
Rental income		$ 33,236	$ 18,428
Expense reimbursement		2,869	1,316
Other		791	747
Total Revenues		36,896	20,491
Operating Expenses:
Property operating expenses		14,332	8,466
Acquisition costs		2,133	1,479
Stock-based compensation		1,091
General and administrative		1,314
Base management fee		682
Depreciation and amortization		14,729	7,775
Total Operating Expenses		34,281	17,720
Operating Income		2,615	2,771
Interest Expense:
Contractual interest expense		(7,854)	(5,050)
Amortization of deferred financing costs		(1,443)	(318)
Loss on early extinguishment of Predecessor debt		(1,655)
Interest expense, net		(10,952)	(5,368)
Change in fair value of earn-out		(1,048)
Gain on equity investment		4,475
Canadian offering costs			(1,983)
Equity in income of unconsolidated entity			403
Net income / (loss)		(4,910)	(4,177)
Less: Net (income)/loss attributable to non-controlling interests in properties		(82)	44
Less: Net loss/(income) attributable to Predecessor		(1,973)	$ (4,133)
Less: Net loss attributable to Operating Partnership unitholders' non-controlling interests		1,955
Net loss attributable to stockholders		$ (5,010)
Net loss per share:
Basic and diluted		$ (0.59)
Weighted average common shares outstanding:
Basic and diluted		8,476
Dividend distributions declared per common share and unit		$ 0.653

Consolidated and Combined Stat5

Consolidated and Combined Statements of Changes in Equity - USD ($) $ in Thousands	Total	Secondary Public Offering Total [Member]	Common Stock [Member]	Common Stock [Member]Secondary Public Offering Total [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]Secondary Public Offering Total [Member]	Accumulated Deficit [Member]	Predecessor Equity [Member]	Parent [Member]	Parent [Member]Secondary Public Offering Total [Member]	Operating Partnership Unitholders' Non-controlling Interests [Member]	Operating Partnership Unitholders' Non-controlling Interests [Member]Secondary Public Offering Total [Member]	Non-controlling Interests in Properties [Member]
Beginning balance (Predecessor [Member]) at Dec. 31, 2012	$ 6,009							$ 6,149	$ 6,149				$ (140)
Contributions | Predecessor [Member]	27,472							26,107	26,107				1,365
Distributions | Predecessor [Member]	(1,596)							(1,499)	(1,499)				(97)
Net income/(loss) | Predecessor [Member]	(4,177)							(4,133)	(4,133)				(44)
Ending balance (Predecessor [Member]) at Dec. 31, 2013	27,708							26,624	26,624				1,084
Contributions | Predecessor [Member]	3,906							3,844	3,844				62
Distributions | Predecessor [Member]	(1,500)							(1,347)	(1,347)				(153)
Net income/(loss) | Predecessor [Member]	1,944							1,973	1,973				(29)
Ending balance (Predecessor [Member]) at Apr. 20, 2014	32,058							31,094	31,094				964
Beginning balance (Predecessor [Member]) at Dec. 31, 2013	27,708							26,624	26,624				1,084
Net income/(loss) | Predecessor [Member]	(4,910)
Ending balance at Dec. 31, 2014	$ 91,235		$ 123		$ 91,308		$ (11,320)		80,111		$ 11,878		(754)
Ending balance, shares at Dec. 31, 2014	12,279,110		12,279,000
Net proceeds from sale of common shares, values	$ 72,471	$ 43,615	$ 66	$ 41	72,405	$ 45,380			72,471	$ 45,421		$ (1,806)
Beginning balance (Predecessor [Member]) at Apr. 20, 2014	32,058							31,094	31,094				964
Net proceeds from sale of common shares			6,582,000	4,086,000
Formation Transaction	(42,620)		$ 16		(27,568)			$ (31,094)	(58,646)		17,684		(1,658)
Formation Transaction, shares			1,611,000
Restricted stock award grants, values	1,091				1,091				1,091
Dividend distributions declared	(8,355)						(6,310)		(6,310)		(2,045)
Distributions	(171)												(171)
Net income/(loss)	(6,854)						(5,010)		(5,010)		(1,955)		111
Ending balance at Dec. 31, 2014	$ 91,235		$ 123		91,308		(11,320)		80,111		11,878		(754)
Ending balance, shares at Dec. 31, 2014	12,279,110		12,279,000
Conversion of OP units to shares, values					47				47		(47)
Conversion of OP units to shares, shares			12,000
Net proceeds from sale of common shares	5,800,000
Restricted stock award grants, values	$ 1,907		$ 1		1,906				1,907
Restricted stock award grants, shares			137,000
Earn out payment in shares, values	3,163		$ 1		2,057				2,058		1,105
Earn out payment in shares, shares			90,000
Dividend distributions declared	(14,497)						(11,687)		(11,687)		(2,810)
Distributions	(421)												(421)
Net income/(loss)	(7,667)						(6,591)		(6,591)		(1,576)		500
Ending balance at Dec. 31, 2015	$ 73,720		$ 125		$ 95,318		$ (29,598)		$ 65,845		$ 8,550		$ (675)
Ending balance, shares at Dec. 31, 2015	12,517,777		12,518,000

Consolidated and Combined Stat6

Consolidated and Combined Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash Flows from Operating Activities:
Net loss	$ (7,667)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	21,624
Amortization of deferred financing costs	746
Amortization of above/below market leases	349
Increase in straight-line rent	(1,895)
Non-cash stock compensation	1,907
Change in fair value of earn-out	841
Changes in non-cash working capital:
Rents receivable, net	(4,506)
Prepaid expenses and other assets	(648)
Accounts payable and accrued liabilities	2,988
Deferred rent	440
Tenant rent deposits	(16)
Net Cash Provided By Operating Activities	14,163
Cash Flows to Investing Activities:
Additions to real estate properties	(5,466)
Acquisition of real estate, net of cash assumed	(166,788)
Deferred leasing cost	(3,217)
Net Cash Used In Investing Activities	(175,471)
Cash Flows from Financing Activities:
Debt issuance and extinguishment costs	(1,239)
Proceeds from mortgage loans payable	105,813
Proceeds of revolving credit facility	50,000
Repayment of mortgage loans payable	(1,082)
Distributions to non-controlling interests in properties	(421)
Dividend distributions paid to stockholders and Operating Partnership unitholders	(14,404)
Change in restricted cash	(4,083)
Net Cash Provided By Financing Activities	134,584
Net Increase (Decrease) in Cash and Cash Equivalents	(26,724)
Cash and Cash Equivalents, Beginning of Year	34,862
Cash and Cash Equivalents, End of Year	8,138	$ 34,862
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	10,030
Earn-out payment in shares	3,163
Predecessor [Member]
Cash Flows from Operating Activities:
Net loss		(4,910)	$ (4,177)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization		14,729	7,775
Amortization of deferred financing costs		1,443	318
Amortization of above/below market leases		541	521
Increase in straight-line rent		(1,315)	(2,330)
Non-cash stock compensation		1,091
Change in fair value of earn-out		1,048
Loss on early extinguishment of debt		885
Gain on equity investment		(4,475)
Equity in income of unconsolidated entity			(403)
Other professional fees			160
Canadian offering costs			1,983
Changes in non-cash working capital:
Rents receivable, net		(1,986)	(75)
Prepaid expenses and other assets		(399)	425
Accounts payable and accrued liabilities		(88)	1,170
Deferred rent		723	1,235
Tenant rent deposits		500	628
Net Cash Provided By Operating Activities		7,787	7,230
Cash Flows to Investing Activities:
Additions to real estate properties		(4,156)	(3,895)
Acquisition of real estate, net of cash assumed		(89,565)	(71,314)
Distribution from unconsolidated entity			948
Deferred leasing cost		(859)	(845)
Net Cash Used In Investing Activities		(94,580)	(75,106)
Cash Flows from Financing Activities:
Net proceeds from issuance of common shares		72,471
Formation transactions		(35,245)
Net proceeds from secondary public offering		49,671
Redemption of common stock and common units held by Operating Partnership non-controlling interests		(6,056)
Debt issuance and extinguishment costs		(4,063)	(769)
Proceeds from mortgage loans payable		205,860	57,777
Proceeds of revolving credit facility		15,500
Repayment of mortgage loans payable		(161,837)	(1,118)
Repayment of revolving credit facility		(15,500)
Contributions from partners and members		3,844	22,008
Contributions from non-controlling interests in properties		62	1,365
Distributions to partners and members		(1,347)	(1,499)
Distributions to non-controlling interests in properties		(324)	(97)
Dividend distributions paid to stockholders and Operating Partnership unitholders		(4,784)
Change in restricted cash		(3,725)	(5,770)
Net Cash Provided By Financing Activities		114,527	71,897
Net Increase (Decrease) in Cash and Cash Equivalents		27,734	4,021
Cash and Cash Equivalents, Beginning of Year	$ 34,862	7,128	3,107
Cash and Cash Equivalents, End of Year		34,862	7,128
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest		$ 7,826	$ 4,813

Organization and Description of

Organization and Description of Business	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	1. Organization and Description of Business City Office REIT, Inc. (the “Company”) was organized in the state of Maryland on November 26, 2013. On April 21, 2014, the Company completed its initial public offering (“IPO”) of shares of the Company’s common stock. The Company contributed the net proceeds of the IPO to City Office REIT Operating Partnership, L.P., a Maryland limited partnership (the “Operating Partnership”), in exchange for common units in the Operating Partnership. Both the Company and the Operating Partnership commenced operations upon completion of the IPO and certain related formation transactions (the “Formation Transactions”). The Company’s interest in the Operating Partnership entitles the Company to share in distributions from, and allocations of profits and losses of, the Operating Partnership in proportion to the Company’s percentage ownership of common units. As the sole general partner of the Operating Partnership, the Company has the exclusive power under the partnership agreement to manage and conduct the Operating Partnership’s business, subject to limited approval and voting rights of the limited partners. City Office REIT, Inc. Predecessor (the “Predecessor”) represents the combination of the six properties outlined below (the “Properties”). The Predecessor does not represent a legal entity. The Predecessor and its related assets and liabilities are under common control and were contributed to a newly formed Operating Partnership in connection with the IPO of the Company on April 21, 2014. The historical financial results in these financial statements for periods prior to April 21, 2014 relate to the Predecessor. The Predecessor is comprised of the following properties: • City Center • Central Fairwinds • AmberGlen • Washington Group Plaza • Corporate Parkway • Cherry Creek The Company has elected to be taxed and to continue to operate in a manner that will allow it to continue to qualify as a real estate investment trust (“REIT”). Subject to qualification as a REIT, the Company will be permitted to deduct dividend distributions paid to its stockholders, eliminating the U.S. federal taxation of income represented by such distributions at the Company level. REITs are subject to a number of organizational and operational requirements. If the Company fails to qualify as a REIT in any taxable year, the Company will be subject to U.S. federal and state income tax on its taxable income at regular corporate tax rates and any applicable alternative minimum tax. Pursuant to the Jumpstart Our Business Startups Act (the “JOBS Act”), the Company qualifies as an emerging growth company (“EGC”). An EGC may choose to take advantage of the extended private company transition period provided for complying with new or revised accounting standards that may be issued by the Financial Accounting Standards Board (“FASB”) or the Securities and Exchange Commission (the “SEC”). The Company has elected to opt out of such extended transition period. This election is irrevocable. Initial Public Offering and Formation Transactions The Company’s operations are carried on primarily through the Operating Partnership and wholly owned subsidiaries of the Operating Partnership. Both the Company and the Operating Partnership commenced operations upon completion of the IPO and certain related Formation Transactions. On April 21, 2014, the Company closed the IPO, pursuant to which it sold 5,800,000 shares of common stock to the public at a public offering price of $12.50 per share. The Company raised $72.5 million in gross proceeds, resulting in net proceeds to us of approximately $63.4 million after deducting approximately $5.1 million in underwriting discounts and approximately $4.0 million in other expenses relating to the IPO. On May 9, 2014, the underwriters of the IPO exercised their overallotment option to purchase an additional 782,150 shares of the Company’s common stock at the IPO price of $12.50 a share resulting in additional gross proceeds of approximately $9.8 million. The net proceeds to the Company were $9.1 million after deducting approximately $0.7 million in underwriting discounts. The Company’s common stock began trading on the New York Stock Exchange under the symbol “CIO” on April 15, 2014. The Company contributed the net proceeds of the IPO to the Operating Partnership in exchange for common units in the Operating Partnership. The Operating Partnership utilized a portion of the net proceeds of the IPO to pay fees in connection with the assumption of the indebtedness, pay expenses incurred in connection with the IPO and Formation Transactions and repay loans that were made to several of the contributing entities by certain investors in such entities. The remaining funds were used for general working capital purposes and to fund acquisitions. Pursuant to the Formation Transactions and exercise of the underwriters’ overallotment option, the Operating Partnership acquired a 100% interest in each of the Washington Group Plaza, Cherry Creek and Corporate Parkway properties and acquired an approximate 76% economic interest in the AmberGlen property, 90% interest in the Central Fairwinds property and 95% interest in the City Center property. These initial property interests were contributed in exchange for 3,731,209 common units, 1,858,860 common stock and $19.4 million of cash. On May 9, 2014, subsequent to the exercise of the underwriters’ overallotment option, 479,305 common units and 248,095 common stock were redeemed for $9.1 million in cash. In connection with the IPO and Formation Transactions, the Company, through its Operating Partnership, extinguished the loan on the Central Fairwinds property and completed a refinancing of three properties (Cherry Creek, City Center and Corporate Parkway) with a new $95 million non-recourse mortgage loan and proceeds from the IPO. The loan bears a fixed interest rate of 4.34% and matures on May 6, 2021. The following is a summary of the Predecessor Statements of Operations for the period from January 1, 2014 through April 20, 2014, and the Company’s Statement of Operations for the period from April 21, 2014 through December 31, 2014. These amounts are included in the consolidated and combined statement of operations herein for the year ended December 31, 2014. All balances as of December 31, 2013 are those of the Predecessor. (in thousands) Predecessor City Office REIT, Inc. January 1, 2014 April 21, 2014 through Revenues: Rental income $ 8,865 $ 24,371 Expense reimbursement 555 2,314 Other 343 448 Total Revenues 9,763 27,133 Operating Expenses Property operating expenses 3,775 10,557 Acquisition costs 806 1,327 Stock-based compensation — 1,091 General and administrative 79 1,235 Base management fees — 682 Depreciation and amortization 3,862 10,867 Total Operating Expenses 8,522 25,759 Operating income 1,241 1,374 Interest expense, net (3,772 ) (7,180 ) Change in fair value of earn-out — (1,048 ) Gain on equity investment 4,475 — Net income / (loss) 1,944 (6,854 ) Net loss / (income) attributable to non-controlling interests in properties 29 (111 ) Net income attributable to Predecessor 1,973 — Net loss attributable to Operating Partnership unitholders’ non-controlling interests 1,955 Net loss attributable to stockholders (5,010 )

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Basis of Preparation and Summary of Significant Accounting Policies The accompanying consolidated and combined financial statements were prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and include the financial position and results of operations of the Company, the Operating Partnership and its wholly owned subsidiaries. All significant intercompany transactions and balances have been eliminated on consolidation. The Predecessor represents a combination of certain entities holding interests in real estate that were commonly controlled prior to the Formation Transactions. Due to their common control, the financial statements of the separate entities which own the properties are presented on a combined basis in the Predecessor financial statements. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the consolidated and combined financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include allocation of the purchase price of acquired real estate properties among tangible and intangible assets, determination of the useful life of real estate properties and other long lived assets and the valuation of the earn-out liability on the Central Fairwinds property. Such estimates are based on management’s best judgment, after considering past, current and expected events and economic conditions. Actual results could differ from management’s estimates. Cash and Cash Equivalents Cash and cash equivalents include unrestricted cash and short-term investments with a maturity date of less than three months when acquired. Restricted Cash Restricted cash consists of cash held in escrow by lenders pursuant to certain lender agreements. Rent Receivable, Net The Company continuously monitors collections from tenants and makes a provision for estimated losses based upon historical experience and any specific tenant collection issues that the Company has identified. As of December 31, 2015 and 2014, the Company’s allowance for doubtful accounts was not significant. Business Combinations When a property is acquired, management considers the substance of the agreement in determining whether the acquisition represents an asset acquisition or a business combination. Upon acquisitions of properties that constitutes a business, the fair value of the real estate acquired, which includes the impact of fair value adjustments for assumed mortgage debt related to property acquisitions, is allocated to the acquired tangible assets, consisting of land, buildings and improvements and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in-place leases and value of tenant relationships, based in each case on their fair values. Acquisition costs are expensed as incurred in the accompanying combined statements of operations. Also, non-controlling interests acquired are recorded at estimated fair market value. The fair value of the tangible assets of an acquired property (which includes land, buildings and improvements and fixtures and equipment) is determined by valuing the property as if it were vacant. The “as-if-vacant” value is then allocated to land and buildings and improvements based on management’s determination of relative fair values of these assets. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates costs to execute similar leases including leasing commissions. The fair value of above-market and below-market lease values are recorded based on the difference between the current in-place lease rent and management’s estimate of current market rents. Below-market lease intangibles are recorded as part of acquired lease intangibles liability and amortized into rental revenue over the non-cancelable periods and bargain renewal periods of the respective leases. Above-market leases are recorded as part of intangible assets and amortized as a direct charge against rental revenue over the non-cancelable portion of the respective leases. The fair value of acquired in-place leases are recorded based on the costs management estimates the Company would have incurred to lease the property to the occupancy level of the property at the date of acquisition. Such estimates include the fair value of leasing commissions and legal costs that would be incurred to lease the property to this occupancy level. Additionally, management evaluates the time period over which such occupancy level would be achieved and includes an estimate of the net operating costs incurred during the lease-up period. Acquired in-place leases are amortized on a straight-line basis over the term of the individual leases. Revenue Recognition The Company recognizes lease revenue on a straight-line basis over the term of the lease. Certain leases allow for the tenant to terminate the lease, but the tenant must make a termination payment as stipulated in the lease. If the termination payment is in such an amount that continuation of the lease appears, at the time of lease inception, to be reasonably assured, then the Company recognizes revenue over the term of the lease. The Company has determined that for these leases, the termination payment is in such an amount that continuation of the lease appears, at the time of inception, to be reasonably assured. The Company recognizes lease termination fees as revenue in the period received and writes off unamortized lease-related intangible and other lease-related account balances, provided there are no further Company obligations under the lease. Otherwise, such fees and balances are recognized on a straight-line basis over the remaining obligation period with the termination payments being recorded as a component of rent receivable-deferred or deferred revenue on the consolidated balance sheets. If the Company funds tenant improvements and the improvements are deemed to be owned by the Company, revenue recognition will commence when the improvements are substantially completed and possession or control of the space is turned over to the tenant. If the Company determines that the tenant allowances are lease incentives, the Company commences revenue recognition when possession or control of the space is turned over to the tenant for tenant work to begin. The lease incentive is recorded as a deferred expense and amortized as a reduction of revenue on a straight-line basis over the respective lease term. Recoveries from tenants for real estate taxes, insurance and other operating expenses are recognized as revenues in the period that the applicable costs are incurred. The Company recognizes differences between estimated recoveries and the final billed amounts in the subsequent year. Final billings to tenants for real estate taxes, insurance and other operating expenses did not vary significantly as compared to the estimated receivable balances. Real Estate Properties Real estate properties are stated at cost less accumulated depreciation, except land. Depreciation is computed on the straight-line basis over estimated useful lives of: Years Buildings and improvement 29-50 Furniture, fixtures and equipment 4-7 Expenditures for maintenance and repairs are charged to operations as incurred. Impairment of Real Estate Properties Long-lived assets currently in use are reviewed periodically for possible impairment and will be written down to fair value if considered impaired. Long-lived assets, to be disposed of, are written down to the lower of cost or fair value less the estimated cost to sell. The Company reviews its real estate properties for impairment when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. The Company measures and records impairment losses and reduces the carrying value of properties when indicators of impairment are present and the expected undiscounted cash flows related to those properties are less than their carrying amounts. In cases where the Company does not expect to recover its carrying costs on properties held for use, the Company reduces its carrying costs to fair value. Investment in Unconsolidated Entity The Company accounts for its investment in the unconsolidated entity using the equity method as it does not exercise control over significant asset decisions such as buying, selling or financing nor is it the primary beneficiary under Accounting Standards Updates (“ASC”) Topic 810 Consolidation. Under the equity method, the Company increases its investment balance by recording its proportionate share of net income and contributions and decreases its investment balance by recording its proportionate share of net loss and distributions. The Company reviews its investment in unconsolidated entity for other-than-temporary declines in market value when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. In this analysis of fair value, the Company uses a discounted cash flow analysis to estimate the fair value of its investment taking into account expected cash flow from operations, holding period and net proceeds from the dispositions of the property. Any decline that is not expected to be recovered is considered other than temporary and an impairment charge is recorded as a reduction in the carrying value of the investment. For the year ended December 31, 2013, there were no impairment charges related to the Company’s investment in unconsolidated entity. Concentration of Credit Risk The Company places its temporary cash investments in high credit financial institutions. However, a portion of temporary cash investments may exceed FDIC insured levels from time to time. The Company has never experienced any losses related to these balances. Income Taxes The Company has elected to be taxed and to continue to operate in a manner that will allow it to continue to qualify as a REIT. To qualify as a REIT, the Company is required to distribute dividends equal to at least 90% of the REIT taxable income (computed without regard to the dividends paid deduction and net capital gains) to its stockholders, and meet the various other requirements imposed by the Code relating to matters such as operating results, asset holdings, distribution levels and diversity of stock ownership. Provided the Company qualifies for taxation as a REIT, it is generally not subject to U.S. federal corporate-level income tax on the earnings distributed currently to its stockholders. If the Company fails to qualify as a REIT in any taxable year, the Company will be subject to U.S. federal and state income tax on its taxable income at regular corporate tax rates and any applicable alternative minimum tax. In addition, the Company may not be able to re-elect as a REIT for the four subsequent taxable years. For periods prior to the completion of the IPO and the Formation Transactions on April 21, 2014, no provision was made for U.S. federal, state or local income taxes because profits and losses of the Predecessor flowed through to its respective partners, members and shareholders who were individually responsible for reporting such amounts. For periods subsequent to the completion of the IPO and the Formation Transactions, the taxable REIT subsidiaries are subject to federal, state and local corporate income taxes to the extent there is taxable income. Non-controlling Interests The Company follows the provisions pertaining to non-controlling interests of ASC Topic 810. A non-controlling interest is the portion of equity in a subsidiary not attributable, directly or indirectly, to a parent. Among other matters, the non-controlling interest standards require that non-controlling interests be reported as part of equity in the consolidated balance sheet (separately from the controlling interest’s equity). Upon completion of the IPO and Formation Transactions and exercise of the underwriters’ overallotment option, the Operating Partnership issued 3,251,904 common units of limited partnership interest to the Predecessor’s prior investors as partial consideration for the contribution of their interest in the Predecessor to the Operating Partnership. Non-controlling interest in the Company represents common units of the Operating Partnership held by the Predecessor’s prior investors. On December 10, 2014, we completed a public offering pursuant to which we sold 3,750,000 of our common stock to the public. On December 23, 2014, the underwriters of the offering exercised their overallotment option to purchase an additional 512,664 shares of our common stock which was used entirely to redeem 336,195 common units and 176,469 common stock held by the Operating Partnerships’ non-controlling interest. As of December 31, 2015 and 2014, the Company held an 80.3% and 80.8% interest, respectively, in the Operating Partnership. As the sole general partner and the majority interest holder, the Company consolidates the financial position and results of operations of the Operating Partnership. Equity-Based Compensation The Company accounts for equity-based compensation, including shares of restricted stock units, in accordance with ASC Topic 718 Compensation—Stock Compensation, which requires the Company to recognize an expense for the fair value of equity-based awards. The estimated fair value of restricted stock units is amortized over their respective vesting periods. Earnings per Share The Company calculates net income per share based upon the weighted average shares outstanding from January 1 to December 31, 2015 and for the period beginning April 21—December 1, 2014 for the prior year. Diluted earnings per share is calculated after giving effect to all potential dilutive shares outstanding during the period. There were 3,070,405 and 2,915,709 potentially dilutive shares outstanding related to the issuance of common units held by non-controlling interests during the year ended December 31, 2015 and 2014 respectively; however, the shares were excluded from the computation of diluted shares as their impact would have been anti-dilutive. As a result, the number of diluted outstanding shares was equal to the number of basic outstanding shares. Derivative Instruments and Hedging Activities The Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The Company has not elected to designate any instruments as a hedge. Fair Value of Financial Instruments ASC 820-10, Fair Value Measurements and Disclosures (“ASC 820-10”) establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy). Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which is typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability. Deferred Leasing Costs Fees and costs paid in the successful negotiation of leases are deferred and amortized on a straight-line basis over the terms of the respective leases. Fees and costs incurred in connection with obtaining financing are deferred and amortized over the term of the related debt obligation. Accumulated amortization of deferred leasing costs as of December 31, 2015 and 2014 was $2,257,551 and $1,496,605, respectively. Offering Costs Costs related to the IPO and Formation Transactions paid by the Company’s Predecessor were reimbursed from the proceeds of the IPO. Segment Reporting The Company operates in one industry segment, commercial real estate. New Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which creates a new Topic Accounting Standards Codification (Topic 606). The standard is principle-based and provides a five-step model to determine when and how revenue is recognized. The core principle is that a company should recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. This standard is effective for interim or annual periods beginning after December 15, 2017, and allows for either full retrospective or modified retrospective adoption. Early adoption of this standard is not allowed. We are currently evaluating the impact the adoption of Topic 606 will have on our financial statements. In January 2015, the FASB issued ASU No. 2015-01, “Income Statement—Extraordinary and Unusual Items.” ASU 2015-01 eliminates the concept of extraordinary items. However, the presentation and disclosure requirements for items that are either unusual or in nature or infrequent in occurrence remain and will be expanded to include items that are both unusual in nature and infrequent in occurrence. ASU 2015-01 is effective for periods beginning after December 15, 2015. We do not expect any impact of adopting this new accounting standard on our financial statements. In February 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-02, Consolidation (Topic 810)—Amendments to the Consolidation Analysis, which amends the criteria for determining which entities are considered variable interest entities (“VIE”), amends the criteria for determining if a service provider possesses a variable interest in a VIE and ends the deferral granted to investment companies for application of the VIE consolidation model. ASU 2015-02 is effective for annual periods, and interim periods therein, beginning after December 15, 2015. We are currently evaluating the impact the adoption of Topic 810 will have on our financial statements. In April 2015, the FASB issued ASU 2015-3, Simplifying the Presentation of Debt Issuance Costs, which changes the presentation of debt issuance costs in financial statements. ASU 2015-3 requires an entity to present such costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs will continue to be reported as interest expense. ASU 2015-3 is effective for annual reporting periods beginning after December 15, 2016. Early adoption is permitted. The new guidance will be applied retrospectively to each prior period presented. The Company will adopt ASU 2015-3 on January 1, 2016, and it is not expected to have a material impact on the Company’s consolidated financial statements and disclosures. In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments. The update requires that acquiring entities in a business combination recognize adjustments to provisional amounts identified in the reporting period in which the adjustment amounts are determined, including the cumulative effect of the change in provisional amount, as if the accounting had been completed at the acquisition date. Adjustments related to previous reporting periods must be disclosed by income statement line item, either on the face of the income statement or in the notes, in the period for which the adjustment was identified. ASU 2015-16 is effective for annual reporting periods beginning after December 15, 2015. The Company does not expect ASU 2015-16 to have a material impact on the Company’s consolidated financial statements and disclosures. In February 2016, the FASB issued ASU 2016-02, Leases. The update amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. ASU 2016-02 will be effective for annual reporting periods beginning after December 15, 2018. Early adoption is permitted. We are currently evaluating the impact of adopting the new leases standard on our consolidated financial statements.

Rents Receivable, Net

Rents Receivable, Net	12 Months Ended
	Dec. 31, 2015
Text Block [Abstract]
Rents Receivable, Net	3. Rents Receivable, Net The Company’s rents receivable is comprised of the following components (in thousands): December 31, December 31, Billed receivables $ 588 $ 585 Straight-line receivables 13,794 7,396 Total rents receivable $ 14,382 $ 7,981 Substantially all of these assets have been pledged as collateral for mortgage loans payable (see Note 7).

Real Estate Investments

Real Estate Investments	12 Months Ended
	Dec. 31, 2015
Real Estate [Abstract]
Real Estate Investments	4. Real Estate Investments Acquisitions During the years ended December 31, 2015, 2014 and 2013 the Company acquired the following properties: Property Date Acquired Percentage Owned Corporate Parkway May 2013 100 % Washington Group Plaza June 2013 100 % (1) Cherry Creek January 2014 100 % Plaza 25 June 2014 100 % Lake Vista Pointe July 2014 100 % Florida Research Park Nov 2014 100 % Logan Tower Feb 2015 100 % Superior Pointe June 2015 100 % DTC Crossroads June 2015 100 % 190 Office Center Sept 2015 100 % Intellicenter Sept 2015 100 % (1) At acquisition of Washington Group Plaza in June 2013, the Company held a 90% interest in each of the properties. Upon the IPO and Formation Transactions, the Company increased its ownership share in the Washington Group Plaza property to 100%. The above acquisitions have been accounted for as business combinations. The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2015 (in thousands): Logan Superior DTC 190 Office Intellicenter Total December 31, Land $ 1,306 $ 3,153 $ 7,137 $ 7,162 $ 5,244 $ 24,002 Buildings and improvements 7,844 19,250 22,545 39,367 31,359 120,365 Tenant improvements 353 584 638 323 2,919 4,817 Acquired intangible assets 1,274 2,866 4,152 5,673 7,742 21,707 Prepaid expenses and other assets — 24 — 64 — 88 Accounts payable and other liabilities (48 ) (316 ) (605 ) (720 ) (321 ) (2,010 ) Lease intangible liabilities (306 ) (53 ) (353 ) (805 ) (664 ) (2,181 ) Total Consideration $ 10,423 $ 25,508 $ 33,514 $ 51,064 $ 46,279 $ 166,788 On January 2, 2014, the Predecessor acquired the remaining 57.7% interest it did not already own in ROC-SCCP Cherry Creek I, LP (“Cherry Creek”) for approximately $12.0 million. The acquisition was financed through a new $50 million mortgage loan, the proceeds of which were used to repay $36 million of existing debt of Cherry Creek, fund the payment of $12.0 million to the seller, pay $1.2 million of deferred financing costs and $0.8 million in transactions costs. The Company recognized expenses relating to the Cherry Creek acquisition of $806,344 for the year ended December 31, 2014. A gain of $4.5 million was recognized from the fair value adjustment associated with the Predecessor’s original ownership due to a change in control, calculated as follows (in thousands): Fair value of assets and liabilities acquired $ 56,833 Less existing mortgage in Cherry Creek (36,000 ) 20,833 Less cash paid to seller (12,021 ) Fair value of 42.3% equity interest 8,812 Carrying value of investment in Cherry Creek (4,337 ) Gain on existing 42.3% equity interest $ 4,475 The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2014 (in thousands): Cherry Creek Plaza 25 Lake Vista Florida Research Total December 31, 2014 Land $ 25,745 $ 1,764 $ 4,115 $ 4,415 $ 36,039 Buildings and improvements 15,771 18,487 17,562 16,376 68,196 Tenant improvements 4,372 2,076 3,038 1,399 10,885 Acquired intangible assets 12,009 2,924 3,685 4,309 22,927 Prepaid expenses and other assets — 2 30 104 136 Accounts payable and other liabilities (815 ) (641 ) (1,733 ) (41 ) (3,230 ) Lease intangible liabilities (249 ) (328 ) — — (577 ) Total Consideration $ 56,833 $ 24,284 $ 26,697 $ 26,562 $ 134,376 The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2013 (in thousands): Washington Group Plaza Corporate Total December 31, 2013 Land $ 12,748 $ 3,756 $ 16,504 Buildings and improvements 18,000 18,580 36,580 Tenant improvements 2,717 1,909 4,626 Prepaid expenses and other assets 219 6 225 Deferred leasing costs 12 — 12 Acquired intangible assets 10,470 4,149 14,619 Accounts payable and accrued liabilities (1,234 ) — (1,234 ) Acquired intangible liabilities (18 ) — (18 ) Total Consideration $ 42,914 $ 28,400 $ 71,314 The operating results of the acquired properties, during the years ended December 31, 2015, 2014 and 2013, since the date of acquisition have been included in the Company’s consolidated and combined financial statements. The following table represents the results of the properties’ operations since the date of acquisition on a stand-alone basis (in thousands). Year ended Year ended Year ended Operating revenues $ 10,047 $ 11,282 $ 7,155 Operating expenses (9,957 ) (10,007 ) (7,570 ) Interest (1,192 ) (3,987 ) (1,754 ) $ (1,102 ) $ (2,712 ) $ (2,169 ) The following table presents the unaudited revenues and income from continuing operations for Plaza 25, Lake Vista Pointe, Florida Research Park, Logan Tower, Superior Pointe, DTC Crossroads, 190 Office Center and Intellicenter on a pro forma basis as if the Company had completed the acquisition of the properties as of January 1, 2014 (in thousands): Year ended Year ended Total revenues as reported by City Office REIT, Inc. and Predecessor $ 55,052 $ 36,896 Plus: Plaza 25 — 1,650 Lake Vista Pointe — 1,967 Florida Research Park — 2,352 Logan Tower 143 1,530 Superior Pointe 1,666 3,178 DTC Crossroads 1,904 3,554 190 Office Center 3,798 5,789 Intellicenter 3,196 4,210 Proforma total revenues $ 65,759 $ 61,126 Total operating income as reported by the City Office REIT, Inc. and Predecessor $ 4,527 $ 2,615 Property acquisition costs 2,959 (2,959 ) Plus: Plaza 25 — (67 ) Lake Vista Pointe — 397 Florida Research Park — (758 ) Logan Tower (13 ) 98 Superior Pointe (86 ) (270 ) DTC Crossroads (59 ) (102 ) 190 Office Center (233 ) (537 ) Intellicenter 930 847 Proforma operating income/(loss) $ 8,025 $ (736 )

Lease Intangibles

Lease Intangibles	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Lease Intangibles	5. Lease Intangibles Lease intangibles and the value of assumed lease obligations as of December 31, 2015 and 2014 were comprised as follows (in thousands): December 31, 2015 Above In Place Leasing Total Below Below Total Cost $ 5,616 44,478 17,530 67,624 (2,928 ) (138 ) (3,066 ) Accumulated amortization (2,830 ) (17,641 ) (6,163 ) (26,634 ) 750 24 774 $ 2,786 26,837 11,367 40,990 (2,178 ) (114 ) (2,292 ) December 31, 2014 Above In Place Leasing Total Below Below Total Cost $ 4,762 28,505 12,926 46,193 (746 ) (138 ) (884 ) Accumulated Amortization (1,985 ) (11,159 ) (3,658 ) (16,802 ) 258 20 278 $ 2,777 17,346 9,268 29,391 (488 ) (118 ) (606 ) The estimated aggregate amortization expense for lease intangibles for the five succeeding years and in the aggregate are as follows (in thousands): 2016 11,195 2017 8,473 2018 5,469 2019 4,041 2020 3,218 Thereafter 6,302 $ 38,698

Debt

Debt	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Debt	6. Debt The following table summarizes the secured indebtedness as of December 31, 2015 and 2014 (in thousands): Property December 31, December 31, Interest Rate as Maturity Term Loan (1) $ 14,000 $ — LIBOR+6.00 % (2) September 2016 Revolving Credit Facility (3) 50,000 — LIBOR +2.75 % (2) June 2018 Washington Group Plaza (4) 33,669 34,322 3.85 July 2018 AmberGlen Mortgage Loan (5) 24,729 25,158 4.38 May 2019 Midland Life Insurance (6) 95,000 95,000 4.34 May 2021 Lake Vista Pointe (4) 18,460 18,460 4.28 August 2024 Florida Research Park (4)(7) 17,000 17,000 4.44 December 2024 Plaza 25 (4)(8) 17,000 — 4.10 July 2025 190 Office Center (8) 41,250 — 4.79 October 2025 Intellicenter (8) 33,563 — 4.65 October 2025 Total $ 344,671 $ 189,940 All interest rates are fixed interest rates with the exception of the revolving credit facility (“Revolving Credit Facility”) and Term Loan (“Term Loan”) as explained in footnote 1 below. (1) The Company is required to maintain a maximum total leverage ratio of 65%, a minimum liquidity of $3 million and a debt service coverage ratio of no less than 1.60x. (2) As of December 31, 2015, the one month LIBOR rate was 0.40% (3) At December 31, 2015 the Revolving Credit Facility had $75 million authorized and $50 million drawn. In addition, the Revolving Credit Facility has an accordion feature that will permit the Company to borrow up to $150 million, subject to additional collateral availability and lender approval. The Credit Agreement has a maturity date of June 26, 2018, which may be extended to June 26, 2019 at the Company’s option upon meeting certain conditions. The Revolving Credit Facility requires the Company to maintain a fixed charge coverage ratio of no less than 1.60x. At December 31, 2015, the Revolving Credit Facility is cross-collateralized by Central Fairwinds, Logan Tower, Superior Pointe and DTC Crossroads. On July 14, 2015, the Company entered into an Amendment and Joinder to its Amended and Restated Credit Agreement which increased the authorized borrowing capacity under the Credit Agreement from $35 million to $75 million. (4) Interest on mortgage loan is payable monthly plus principal based on 360 months of amortization. (5) The Company is required to maintain a minimum net worth of $25 million and a minimum liquidity of $2 million. (6) The mortgage loan is cross-collateralized by Corporate Parkway, Cherry Creek and City Center. Interest only until June 2016 then interest payable monthly plus principal based on 360 months of amortization. The loan bears a fixed interest rate of 4.34% and matures on May 6, 2021. (7) The Company is required to maintain a minimum net worth of $17 million, minimum liquidity of $1.7 million and a debt service coverage ratio of no less than 1.15x. (8) The Company is required to maintain a debt service coverage ratio of no less than 1.45x, 1.15x, 1.20x respectively for each of Plaza 25, 190 Office Center and Intellicenter. The scheduled principal repayments of mortgage payable as of December 31, 2015 are as follows (in thousands): 2016 $ 16,034 2017 3,036 2018 85,161 2019 26,629 2020 3,917 Thereafter 209,894 Total $ 344,671

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	7. Fair Value of Financial Instruments Fair value measurements are based on assumptions that market participants would use in pricing an asset or a liability. The hierarchy for inputs used in measuring fair value is as follows: Level 1 Inputs – quoted prices in active markets for identical assets or liabilities Level 2 Inputs – observable inputs other than quoted prices in active markets for identical assets and liabilities Level 3 Inputs – unobservable inputs As of December 31, 2015 and 2014, the Company did not have any hedges or derivatives. The fair value of the Central Fairwinds earn-out (note 10) was derived by making assumptions on the timing of the lease up of vacant space and the net effective rents of those new leases and then applying an 8% discount rate to the resulting cash-flows to obtain a present value. The earn-out valuation assumes that approximately 3,000 square feet of additional leasing is completed between the date of the valuation and the end of the calculation period which would take the existing occupancy from 88% signed and committed at December 31, 2015 to 89% by July 2016 and stabilized at that level thereafter. The average net effective rent and incremental operating costs per square foot is assumed to be $14 and $4, respectively. The estimated fair value of the earn-out liability decreased from $8.0 million at December 31, 2014 to $5.7 million at December 31, 2015 primarily due to a $3.2 million payment in August 2015, satisfied through the issuance of common stock, partially offset by an increase in the fair value of the remaining liability during the year ended December 31, 2015 of approximately $0.9 million. Level 3 sensitivity analysis: The Company applies judgment in determining unobservable inputs used to calculate the fair value of Level 3 instruments. Level 3 instruments held by the Company include the earn-out. The unobservable inputs used in the valuation of the earn-out primarily include the net effective rent assumptions. A sensitivity analysis has been performed to determine the potential gain or loss by varying the significant unobservable inputs by increasing or decreasing them by 10%. The impact of applying these other reasonably possible inputs is a potential loss of $0.1 million and a potential gain of $0.1 million. This potential gain or loss would be recorded through profit and loss. Cash Equivalents, Restricted Cash, Accounts Receivable, Accounts Payable and Accrued Liabilities The Company estimates that the fair value approximates carrying value due to the relatively short-term nature of these instruments. Fair Value of Financial Instruments Not Carried at Fair Value With the exception of fixed rate mortgage loans payable, the carrying amounts of the Company’s financial instruments approximate their fair value. The Company determines the fair value of its fixed rate mortgage loan payable based on a discounted cash flow analysis using a discount rate that approximates the current borrowing rates for instruments of similar maturities. Based on this, the Company has determined that the fair value of these instruments was $285,900,000 and $192,500,000 as of December 31, 2015 and December 31, 2014, respectively. Although the Company has determined the majority of the inputs used to value its fixed rate debt fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its fixed rate debt utilize Level 3 inputs, such as estimates of current credit spreads. Accordingly, mortgage loans payable have been classified as Level 3 fair value measurements.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	8. Related Party Transactions Formation and Equity Transactions The Formation Transactions were completed on April 21, 2014 through the contribution of the initial properties by Second City Capital Partners II, Limited Partnership, Second City General Partner II, Limited Partnership, Gibralt US, Inc., GCC Amberglen Investments Limited Partnership and Daniel Rapaport (collectively, the “Second City Group”). The Second City Group received as consideration for its contribution approximately $19.4 million in cash in accordance with the terms of its contribution agreement to acquire various non-controlling interests and eliminate economic incentives in the initial properties. Additional payments to the Second City Group included $4.9 million for reimbursement of IPO costs and $1.8 million for working capital. On May 9, 2014, subsequent to the underwriters’ exercise of the overallotment option, net proceeds of $9.1 million was paid to the Second City Group to redeem 479,305 common units and 248,095 shares of common stock. On December 23, 2014, the underwriters of the secondary public offering exercised their overallotment option to purchase an additional 512,664 shares of our common stock at the offering price of $12.50 a share resulting in additional net proceeds to us of $6.1 million after deducting underwriting discounts. The $6.1 million proceeds received was paid to the Second City Group to redeem 336,195 common units and 176,469 shares of common stock. Property Management Fees Three of the properties (City Center, Central Fairwinds and AmberGlen) engaged related parties to perform asset and property management services for a fee ranging from 3.0% to 3.5% of gross revenue. Management fees paid to the minority partners of these three properties totaled $0.5 million and $0.4 million for the year-ended December 31, 2015 and 2014, respectively. Advisory and Transaction Fees During the year ended December 31, 2015 and 2014, the Company incurred $3.0 million and $1.5 million, respectively, in advisory and transaction fees payable to the Advisor. Earn-Out Payment During the year ended December 31, 2015, a payment of approximately $3.2 million was made to Second City on August 6, 2015 and a second payment of approximately $3.8 million was earned and will be made subsequent to year-end in March 2016 under the Earn-Out provision described in Note 10.

Future Minimum Rent Schedule

Future Minimum Rent Schedule	12 Months Ended
	Dec. 31, 2015
Leases [Abstract]
Future Minimum Rent Schedule	9. Future Minimum Rent Schedule Future minimum lease payments to be received as of December 31, 2015 under noncancellable operating leases for the next five years and thereafter are as follows (in thousands): 2016 $ 52,702 2017 51,421 2018 44,135 2019 38,224 2020 34,882 Thereafter 132,466 $ 353,830 The above minimum lease payments to be received do not include reimbursements from tenants for certain operating expenses and real estate taxes and do not include early termination payments provided for in certain leases. Fifteen state government tenants currently have the exercisable right to terminate their lease if the state does not appropriate rent in its annual budgets. The Company has determined that the occurrence of the government tenant not appropriating the rent in its annual budget is a remote contingency and accordingly recognizes lease revenue on a straight-line basis over the respective lease term. These tenants represent approximately 19.7% of the Company’s total future minimum lease payments as of December 31, 2015.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies Earn-Out As part of the Formation Transactions and contribution agreement with respect to the Central Fairwinds property, the Company is obligated to make additional payments to Second City (each, an “Earn-Out Payment”) for up to a five year period commencing on the initial IPO date of April 21, 2014. Earn-Out Payments are contingent on the property reaching certain specified occupancy levels through new leases to qualified tenants and exceeding a net operating income threshold, which grows annually. Second City will be entitled to receive an Earn-Out Payment (net of the associated leasing costs and inclusive of leasing commissions and tenant improvements/allowances and free rent) as and when the occupancy of Central Fairwinds reaches each of 70%, 80% and 90% (each, an “Earn-Out Threshold”) based on the incremental cash flow generated by new leases and a 7.75% stabilized capitalization rate. The Company will make any additional Earn-Out Payment within 30 days of the end of the Earn-Out Term based on new qualified leases entered into since the achievement of the last Earn-Out Threshold. Earn-Out Payments will be subject to a claw-back if a qualified tenant defaults in the payment of rent and is not replaced with another qualified tenant (see note 8). During the year ended December 31, 2015, the 70% and 80% earn-out occupancy and net operating income thresholds were met. This triggered a payment of approximately $3.2 million which was made on August 6, 2015 and a second payment of approximately $3.8 million which we expect will be made subsequent to year-end in March 2016. The estimated fair value of the earn-out liability decreased from $8.0 million at December 31, 2014 to $5.7 million at December 31, 2015 primarily due to a $3.2 million payment in August 2015, satisfied through the issuance of common stock, partially offset by an increase in the fair value of the remaining liability during the year ended December 31, 2015 of approximately $0.9 million. Tax Protection Agreements In connection with our initial public offering and the related Formation Transactions, our Operating Partnership entered into tax protection agreements that provide that if we dispose of any interest in our initial properties in a taxable transaction prior to the fourth anniversary of the completion of our initial public offering, subject to certain exceptions, we will indemnify certain contributors of properties in our Formation Transactions for their tax liabilities attributable to the built-in gain that exists with respect to our properties as of the time of our initial public offering and their tax liabilities incurred as a result of such tax protection payment. Other The Company is obligated under certain tenant leases to fund tenant improvements and the expansion of the underlying leased properties. Under various federal, state and local laws, ordinances and regulations relating to the protection of the environment, a current or previous owner or operator of real estate may be liable for the cost of removal or remediation of certain hazardous or toxic substances disposed, stored, generated, released, manufactured or discharged from, on, at, under, or in a property. As such, the Company may be potentially liable for costs associated with any potential environmental remediation at any of its formerly or currently owned properties. The Company believes that it is in compliance in all material respects with all federal, state and local ordinances and regulations regarding hazardous or toxic substances. Management is not aware of any environmental liability that it believes would have a material adverse impact on the Company’s financial position or results of operations. Management is unaware of any instances in which the Company would incur significant environmental costs if any or all properties were sold, disposed of or abandoned. However, there can be no assurance that any such non-compliance, liability, claim or expenditure will not arise in the future. The Company is involved from time to time in lawsuits and other disputes which arise in the ordinary course of business. As of December 31, 2015 management believes that these matters will not have a material adverse effect, individually or in the aggregate, on the Company’s financial position or results of operations.

Stockholder's Equity

Stockholder's Equity	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Stockholder's Equity	11. Stockholder’s Equity The Company issued 5,800,000 shares in conjunction with the IPO resulting in net proceeds of $63.4 million after deducting the underwriters’ discount and offering expenses. The underwriters of the IPO exercised their overallotment option to purchase an additional 782,150 shares of the Company’s common stock resulting in additional net proceeds to us of $9.1 million after deducting underwriting discounts. On December 10, 2014, we completed a secondary public offering pursuant to which we sold 3,750,000 of our common stock to the public at a price of $12.50 per share. We raised $46.9 million in gross proceeds, resulting in net proceeds to us of approximately $43.6 million after deducting approximately $2.6 million in underwriting discounts and approximately $0.7 million in other expenses relating to the offering. On December 23, 2014, the underwriters of the offering exercised their overallotment option to purchase an additional 512,664 shares of our common stock at the offering price of $12.50 a share resulting in additional gross proceeds to us of approximately $6.4 million resulting in net proceeds to us of $6.1 million after deducting approximately $0.3 million in underwriting discounts. The net proceeds were used entirely to redeem 336,195 common units and 176,469 common stock held by the Operating Partnerships’ non-controlling interest. Non-controlling Interests Non-controlling interests in the Company represent common units of the Operating Partnership held by the Predecessor’s prior investors. As of December 31, 2015 and 2014, non-controlling interests consisted of 3,070,405 and 2,915,709 Operating Partnership units and represented approximately 19.7% and 19.2% of the Operating Partnership, respectively. Operating Partnership units and shares of common stock have essentially the same economic characteristics, as they share equally in the total net income or loss distributions of the Operating Partnership. Beginning on or after the date which is 12 months after the later of the completion of the initial public offering or the date on which a person first became a holder of common units, each limited partner and assignees of limited partners will have the right, subject to the terms and conditions set forth in the partnership agreement, to require the Operating Partnership to redeem all or a portion of the common units held by such limited partner or assignee in exchange for a cash amount per common unit equal to the value of one share of common stock, determined in accordance with and subject to adjustment under the partnership agreement. The Company has the sole option at its discretion to redeem the common units by issuing common stock on a one-for-one basis. The Operating Partnership unitholders are entitled to share in cash distributions from the Operating Partnership in proportion to its percentage ownership of common units. The following table summarizes the non-controlling interests in properties as of December 31, 2015 and December 31, 2014 (in thousands): December 31, 2015 December 31, 2014 City Center $ (5 ) $ 32 Central Fairwinds 484 422 AmberGlen (1,154 ) (1,208 ) $ (675 ) $ (754 ) Common Stock and Common Unit Distributions During the year ended December 31, 2015, the Company declared aggregate cash distributions to common stockholders and common unitholders of $14.5 million. The Company paid aggregate cash distributions of $10.8 million for the year-ended December 31, 2015 and $3.7 million was payable as of December 31, 2015. During the year ended December 31, 2015, the Company declared the following distributions per share and unit: Period Distribution per Declaration Date Record Date Payment Date January 1, 2015 – March 31, 2015 $ 0.235 March 19,2015 April 3, 2015 April 17, 2015 April 1, 2015 – June 30, 2015 0.235 June 15,2015 July 3, 2015 July 17, 2015 July 1, 2015 – September 30, 2015 0.235 September 15,2015 October 5, 2015 October 19, 2015 October 1, 2015 – December 31, 2015 0.235 December 18,2015 January 6, 2016 January 20, 2016 Total $ 0.940 Restricted Stock Units The Company has an equity incentive plan (“Equity Incentive Plan”) for certain officers, directors, advisors and personnel, and, with approval of the board of directors, for subsidiaries, the Advisor and their respective affiliates. The Equity Incentive Plan provides for grants of restricted common stock, restricted stock units, phantom shares, stock options, dividend equivalent rights and other equity-based awards (including LTIP Units), subject to the total number of shares available for issuance under the plan. The Equity Incentive Plan is administered by the compensation committee of the board of directors (the “plan administrator”). The maximum number of shares of common stock that may be issued under the Equity Incentive Plan is 1,263,580 shares. To the extent an award granted under the Equity Incentive Plan expires or terminates, the shares subject to any portion of the award that expires or terminates without having been exercised or paid, as the case may be, will again become available for the issuance of additional awards. During the year ended December 31, 2015, 43,667 restricted stock units (“RSUs”) were granted to directors and non-executive employees of the Advisor with a fair value of $0.6 million. On April 21, 2014, 352,272 restricted stock units (“RSUs”) were granted to the Company’s executive officers and one of the directors at a grant date fair value of $12.50 totaling $4.4 million. During the year ended December 31, 2014, 30,100 RSUs were granted to directors and non-executive employees of the Advisor with a fair value of $0.4 million. The awards will vest in three equal, annual installments on each of the first three anniversaries of the date of grant. For the year ended December 31, 2015 and December 31, 2014, the Company recognized net compensation expense of $1.9 million and $1.1 million related to the RSU’s. A RSU award represents the right to receive shares of the Company’s common stock in the future, after the applicable vesting criteria, determined by the plan administrator, has been satisfied. The holder of an award of RSU has no rights as a stockholder until shares of common stock are issued in settlement of vested restricted stock units. The plan administrator may provide for a grant of dividend equivalent rights in connection with the grant of RSU; provided, however, that if the restricted stock units do not vest solely upon satisfaction of continued employment or service, any payment in respect to the related dividend equivalent rights will be held by the Company and paid when, and only to the extent that, the related RSU vest.

Quarterly Financial Information

Quarterly Financial Information	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	12. Quarterly Financial Information (unaudited): The following tables summarize certain selected quarterly financial data for 2015 and 2014 (in thousands, except per share data): 2015 Quarters Fourth Third Second First Operating revenue $ 17,543 $ 14,616 $ 11,634 $ 11,259 Net loss (1,798 ) (2,984 ) (2,086 ) (799 ) Net loss attributable to stockholders (1,551 ) (2,499 ) (1,798 ) (743 ) Net loss per share $ (0.12 ) $ (0.20 ) $ (0.15 ) $ (0.06 ) 2014 Quarters Fourth Third Second First Operating revenue $ 10,529 $ 9,998 $ 8,393 $ 7,976 Net (loss)/income (1,673 ) (2,374 ) (3,067 ) 2,204 Net loss attributable to stockholders (1,299 ) (1,767 ) (1,944 ) — Net loss per share $ (0.14 ) $ (0.22 ) $ (0.24 ) $ —

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	13. Subsequent Events On February 1, 2016, the Company closed on the previously announced management internalization. On November 2, 2015, the Company and a subsidiary (“Buyer Sub”) entered into a Stock Purchase Agreement (“Stock Purchase Agreement”) with certain stockholders of the Advisor and two personal holding companies that owned stock of the Advisor pursuant to which Buyer Sub acquired all of the outstanding stock of the Advisor. Pursuant to the Stock Purchase Agreement, at closing, the Company issued 297,321 shares of its common stock to the sellers, which include the Company’s three executive officers and Samuel Belzberg, a director of the Company. In addition, the Company will make cash payments to the sellers of up to $3.5 million if the Company’s fully diluted market capitalization reaches the following thresholds prior to December 31, 2016: $1 million upon the Company achieving a $200 million fully diluted market capitalization, an additional $1 million upon the Company achieving a $225 million fully diluted market capitalization and an additional $1.5 million upon the Company achieving a $250 million fully diluted market capitalization (in each case, including in the calculation of fully diluted market capitalization the value of units of limited partnership interest in the Company’s operating partnership held by parties other than the Company at a value per unit equal to the market price of the Company’s common stock). As of March 1, 2016, the Company’s fully diluted market capitalization was $200.8 million. Effective upon closing of the transactions under the Stock Purchase Agreement, each of James Farrar, the Company’s Chief Executive Officer, Gregory Tylee, President and Chief Operating Officer and Anthony Maretic, Chief Financial Officer, Secretary and Treasurer entered into an employment agreement with a subsidiary of the Company and will become employees of the Company. In addition, at the same time, approximately eleven additional current employees of the Advisor and its affiliates became employees of the Company and its subsidiaries and the Company will have offices in Vancouver, British Columbia and Dallas, Texas. In connection with the closing of the transactions under the Stock Purchase Agreement, a subsidiary of the Company entered into an Administrative Services Agreement (the “Administrative Services Agreement”) with entities that manage real estate investment funds affiliated with Second City Capital II Corporation and Second City Real Estate II Corporation (the “Second City funds”). James Farrar, Gregory Tylee and one of its directors, Samuel Belzberg, are officers of the general partners of the Second City funds and own equity interests in the Second City funds. The Administrative Services Agreement has a three year term and pursuant to the agreement, a subsidiary of the Company will provide various administrative services and support to the entities managing the Second City funds. The Company’s subsidiary will receive annual payments for these services under the Administrative Services Agreement as follows: first 12 months—$1.5 million, second 12 months—$1.125 million and third 12 months—$0.625 million, for a total of $3.25 million over the three-year term. In addition, following the expiration of the three year term of the Administrative Services Agreement, the Company will agree to make Messrs. Farrar and Tylee available to assist the Second City funds with respect to certain matters.

Schedule III - Real Estate Prop

Schedule III - Real Estate Properties and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2015
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Schedule III - Real Estate Properties and Accumulated Depreciation	SCHEDULE III – REAL ESTATE PROPERTIES AND ACCUMULATED DEPRECIATION December 31, 2015 (In Thousands) Description Initial Cost to Costs Gross Amount at Which 2015 Accumulated Date of Date Acquired Depreciation Encumbrances Land Buildings and Improvements Land Building and Total AmberGlen $ 25,158 $ 8,790 $ 5,705 $ 3,463 $ 8,790 $ 9,168 $ 17,958 $ 4,410 1984-1998 December 2009 50 Years City Center 24,500 3,123 10,656 8,547 3,123 19,203 22,326 4,685 1984 December 2010 40 Years Central Fairwinds — 1,747 9,751 3,625 1,747 13,376 15,123 1,816 1982 May 2012 40 Years Corporate Parkway 20,500 3,757 20,489 112 3,757 20,601 24,358 3,175 2006 May 2013 43 Years Washington Group Plaza 34,322 12,748 20,716 2,947 12,748 23,663 36,411 3,966 1970-1982 June 2013 29 Years Cherry Creek 50,000 25,745 20,144 239 25,745 20,383 46,128 2,580 1962-1980 January 2014 36 Years Plaza 25 17,000 1,764 20,563 441 1,764 21,004 22,768 1,960 1981 June 2014 30 Years Lake Vista Pointe 18,460 4,115 20,600 — 4,115 20,600 24,715 1,377 2007 July 2014 45 Years Florida Research Park 17,000 4,415 17,775 — 4,415 17,775 22,190 789 1999 November 2014 40 Years Logan Tower 1,305 8,197 103 1,305 8,300 9,605 337 1983 February 2015 33 Years Superior Pointe 3,153 19,834 388 3,153 20,222 23,375 460 2000 June 2015 40 Years DTC Crossroads 7,137 23,184 117 7,137 23,301 30,438 437 1999 June 2015 33 Years 190 Office Centre 1&2 41,250 7,162 39,690 20 7,162 39,710 46,872 550 2001/2008 September 2015 45 Years Intellicenter 33,563 5,244 34,278 — 5,244 34,278 39,522 367 2008 September 2015 50 Years $ 281,753 $ 90,205 $ 271,582 $ 20,002 $ 90,205 $ 291,584 $ 381,789 $ 26,909 (1) The aggregate cost for federal tax purposes as of December 31, 2015 of our real estate assets was $445,353. (2) A summary of activity for real estate and accumulated depreciation for the year ended December 31, 2015 and 2014 is as follows: 2015 2014 Real Estate Properties Balance, beginning of year $ 227,139 $ 107,862 Acquisitions 149,184 115,121 Capital improvements 5,466 4,156 Balance, end of year $ 381,789 $ 227,139 Accumulated depreciation Balance, beginning of year $ 15,311 $ 7,735 Depreciation 11,598 7,576 Balance, end of year $ 26,909 $ 15,311

Summary of Significant Accoun21

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Preparation and Summary of Significant Accounting Policies The accompanying consolidated and combined financial statements were prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and include the financial position and results of operations of the Company, the Operating Partnership and its wholly owned subsidiaries. All significant intercompany transactions and balances have been eliminated on consolidation. The Predecessor represents a combination of certain entities holding interests in real estate that were commonly controlled prior to the Formation Transactions. Due to their common control, the financial statements of the separate entities which own the properties are presented on a combined basis in the Predecessor financial statements.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the consolidated and combined financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include allocation of the purchase price of acquired real estate properties among tangible and intangible assets, determination of the useful life of real estate properties and other long lived assets and the valuation of the earn-out liability on the Central Fairwinds property. Such estimates are based on management’s best judgment, after considering past, current and expected events and economic conditions. Actual results could differ from management’s estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include unrestricted cash and short-term investments with a maturity date of less than three months when acquired.
Restricted Cash	Restricted Cash Restricted cash consists of cash held in escrow by lenders pursuant to certain lender agreements.
Rent Receivable, Net	Rent Receivable, Net The Company continuously monitors collections from tenants and makes a provision for estimated losses based upon historical experience and any specific tenant collection issues that the Company has identified. As of December 31, 2015 and 2014, the Company’s allowance for doubtful accounts was not significant.
Business Combinations	Business Combinations When a property is acquired, management considers the substance of the agreement in determining whether the acquisition represents an asset acquisition or a business combination. Upon acquisitions of properties that constitutes a business, the fair value of the real estate acquired, which includes the impact of fair value adjustments for assumed mortgage debt related to property acquisitions, is allocated to the acquired tangible assets, consisting of land, buildings and improvements and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in-place leases and value of tenant relationships, based in each case on their fair values. Acquisition costs are expensed as incurred in the accompanying combined statements of operations. Also, non-controlling interests acquired are recorded at estimated fair market value. The fair value of the tangible assets of an acquired property (which includes land, buildings and improvements and fixtures and equipment) is determined by valuing the property as if it were vacant. The “as-if-vacant” value is then allocated to land and buildings and improvements based on management’s determination of relative fair values of these assets. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates costs to execute similar leases including leasing commissions. The fair value of above-market and below-market lease values are recorded based on the difference between the current in-place lease rent and management’s estimate of current market rents. Below-market lease intangibles are recorded as part of acquired lease intangibles liability and amortized into rental revenue over the non-cancelable periods and bargain renewal periods of the respective leases. Above-market leases are recorded as part of intangible assets and amortized as a direct charge against rental revenue over the non-cancelable portion of the respective leases. The fair value of acquired in-place leases are recorded based on the costs management estimates the Company would have incurred to lease the property to the occupancy level of the property at the date of acquisition. Such estimates include the fair value of leasing commissions and legal costs that would be incurred to lease the property to this occupancy level. Additionally, management evaluates the time period over which such occupancy level would be achieved and includes an estimate of the net operating costs incurred during the lease-up period. Acquired in-place leases are amortized on a straight-line basis over the term of the individual leases.
Revenue Recognition	Revenue Recognition The Company recognizes lease revenue on a straight-line basis over the term of the lease. Certain leases allow for the tenant to terminate the lease, but the tenant must make a termination payment as stipulated in the lease. If the termination payment is in such an amount that continuation of the lease appears, at the time of lease inception, to be reasonably assured, then the Company recognizes revenue over the term of the lease. The Company has determined that for these leases, the termination payment is in such an amount that continuation of the lease appears, at the time of inception, to be reasonably assured. The Company recognizes lease termination fees as revenue in the period received and writes off unamortized lease-related intangible and other lease-related account balances, provided there are no further Company obligations under the lease. Otherwise, such fees and balances are recognized on a straight-line basis over the remaining obligation period with the termination payments being recorded as a component of rent receivable-deferred or deferred revenue on the consolidated balance sheets. If the Company funds tenant improvements and the improvements are deemed to be owned by the Company, revenue recognition will commence when the improvements are substantially completed and possession or control of the space is turned over to the tenant. If the Company determines that the tenant allowances are lease incentives, the Company commences revenue recognition when possession or control of the space is turned over to the tenant for tenant work to begin. The lease incentive is recorded as a deferred expense and amortized as a reduction of revenue on a straight-line basis over the respective lease term. Recoveries from tenants for real estate taxes, insurance and other operating expenses are recognized as revenues in the period that the applicable costs are incurred. The Company recognizes differences between estimated recoveries and the final billed amounts in the subsequent year. Final billings to tenants for real estate taxes, insurance and other operating expenses did not vary significantly as compared to the estimated receivable balances.
Real Estate Properties	Real Estate Properties Real estate properties are stated at cost less accumulated depreciation, except land. Depreciation is computed on the straight-line basis over estimated useful lives of: Years Buildings and improvement 29-50 Furniture, fixtures and equipment 4-7 Expenditures for maintenance and repairs are charged to operations as incurred.
Impairment of Real Estate Properties	Impairment of Real Estate Properties Long-lived assets currently in use are reviewed periodically for possible impairment and will be written down to fair value if considered impaired. Long-lived assets, to be disposed of, are written down to the lower of cost or fair value less the estimated cost to sell. The Company reviews its real estate properties for impairment when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. The Company measures and records impairment losses and reduces the carrying value of properties when indicators of impairment are present and the expected undiscounted cash flows related to those properties are less than their carrying amounts. In cases where the Company does not expect to recover its carrying costs on properties held for use, the Company reduces its carrying costs to fair value.
Investment in Unconsolidated Entity	Investment in Unconsolidated Entity The Company accounts for its investment in the unconsolidated entity using the equity method as it does not exercise control over significant asset decisions such as buying, selling or financing nor is it the primary beneficiary under Accounting Standards Updates (“ASC”) Topic 810 Consolidation. Under the equity method, the Company increases its investment balance by recording its proportionate share of net income and contributions and decreases its investment balance by recording its proportionate share of net loss and distributions. The Company reviews its investment in unconsolidated entity for other-than-temporary declines in market value when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. In this analysis of fair value, the Company uses a discounted cash flow analysis to estimate the fair value of its investment taking into account expected cash flow from operations, holding period and net proceeds from the dispositions of the property. Any decline that is not expected to be recovered is considered other than temporary and an impairment charge is recorded as a reduction in the carrying value of the investment. For the year ended December 31, 2013, there were no impairment charges related to the Company’s investment in unconsolidated entity.
Concentration of Credit Risk	Concentration of Credit Risk The Company places its temporary cash investments in high credit financial institutions. However, a portion of temporary cash investments may exceed FDIC insured levels from time to time. The Company has never experienced any losses related to these balances.
Income Taxes	Income Taxes The Company has elected to be taxed and to continue to operate in a manner that will allow it to continue to qualify as a REIT. To qualify as a REIT, the Company is required to distribute dividends equal to at least 90% of the REIT taxable income (computed without regard to the dividends paid deduction and net capital gains) to its stockholders, and meet the various other requirements imposed by the Code relating to matters such as operating results, asset holdings, distribution levels and diversity of stock ownership. Provided the Company qualifies for taxation as a REIT, it is generally not subject to U.S. federal corporate-level income tax on the earnings distributed currently to its stockholders. If the Company fails to qualify as a REIT in any taxable year, the Company will be subject to U.S. federal and state income tax on its taxable income at regular corporate tax rates and any applicable alternative minimum tax. In addition, the Company may not be able to re-elect as a REIT for the four subsequent taxable years. For periods prior to the completion of the IPO and the Formation Transactions on April 21, 2014, no provision was made for U.S. federal, state or local income taxes because profits and losses of the Predecessor flowed through to its respective partners, members and shareholders who were individually responsible for reporting such amounts. For periods subsequent to the completion of the IPO and the Formation Transactions, the taxable REIT subsidiaries are subject to federal, state and local corporate income taxes to the extent there is taxable income.
Non-controlling Interests	Non-controlling Interests The Company follows the provisions pertaining to non-controlling interests of ASC Topic 810. A non-controlling interest is the portion of equity in a subsidiary not attributable, directly or indirectly, to a parent. Among other matters, the non-controlling interest standards require that non-controlling interests be reported as part of equity in the consolidated balance sheet (separately from the controlling interest’s equity). Upon completion of the IPO and Formation Transactions and exercise of the underwriters’ overallotment option, the Operating Partnership issued 3,251,904 common units of limited partnership interest to the Predecessor’s prior investors as partial consideration for the contribution of their interest in the Predecessor to the Operating Partnership. Non-controlling interest in the Company represents common units of the Operating Partnership held by the Predecessor’s prior investors. On December 10, 2014, we completed a public offering pursuant to which we sold 3,750,000 of our common stock to the public. On December 23, 2014, the underwriters of the offering exercised their overallotment option to purchase an additional 512,664 shares of our common stock which was used entirely to redeem 336,195 common units and 176,469 common stock held by the Operating Partnerships’ non-controlling interest. As of December 31, 2015 and 2014, the Company held an 80.3% and 80.8% interest, respectively, in the Operating Partnership. As the sole general partner and the majority interest holder, the Company consolidates the financial position and results of operations of the Operating Partnership.
Equity-Based Compensation	Equity-Based Compensation The Company accounts for equity-based compensation, including shares of restricted stock units, in accordance with ASC Topic 718 Compensation—Stock Compensation, which requires the Company to recognize an expense for the fair value of equity-based awards. The estimated fair value of restricted stock units is amortized over their respective vesting periods.
Earnings per Share	Earnings per Share The Company calculates net income per share based upon the weighted average shares outstanding from January 1 to December 31, 2015 and for the period beginning April 21—December 1, 2014 for the prior year. Diluted earnings per share is calculated after giving effect to all potential dilutive shares outstanding during the period. There were 3,070,405 and 2,915,709 potentially dilutive shares outstanding related to the issuance of common units held by non-controlling interests during the year ended December 31, 2015 and 2014 respectively; however, the shares were excluded from the computation of diluted shares as their impact would have been anti-dilutive. As a result, the number of diluted outstanding shares was equal to the number of basic outstanding shares.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The Company has not elected to designate any instruments as a hedge.
Fair Value of Financial Instruments	Fair Value of Financial Instruments ASC 820-10, Fair Value Measurements and Disclosures (“ASC 820-10”) establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy). Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which is typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.
Deferred Leasing Costs	Deferred Leasing Costs Fees and costs paid in the successful negotiation of leases are deferred and amortized on a straight-line basis over the terms of the respective leases. Fees and costs incurred in connection with obtaining financing are deferred and amortized over the term of the related debt obligation. Accumulated amortization of deferred leasing costs as of December 31, 2015 and 2014 was $2,257,551 and $1,496,605, respectively.
Offering Costs	Offering Costs Costs related to the IPO and Formation Transactions paid by the Company’s Predecessor were reimbursed from the proceeds of the IPO.
Segment Reporting	Segment Reporting The Company operates in one industry segment, commercial real estate.
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which creates a new Topic Accounting Standards Codification (Topic 606). The standard is principle-based and provides a five-step model to determine when and how revenue is recognized. The core principle is that a company should recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. This standard is effective for interim or annual periods beginning after December 15, 2017, and allows for either full retrospective or modified retrospective adoption. Early adoption of this standard is not allowed. We are currently evaluating the impact the adoption of Topic 606 will have on our financial statements. In January 2015, the FASB issued ASU No. 2015-01, “Income Statement—Extraordinary and Unusual Items.” ASU 2015-01 eliminates the concept of extraordinary items. However, the presentation and disclosure requirements for items that are either unusual or in nature or infrequent in occurrence remain and will be expanded to include items that are both unusual in nature and infrequent in occurrence. ASU 2015-01 is effective for periods beginning after December 15, 2015. We do not expect any impact of adopting this new accounting standard on our financial statements. In February 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-02, Consolidation (Topic 810)—Amendments to the Consolidation Analysis, which amends the criteria for determining which entities are considered variable interest entities (“VIE”), amends the criteria for determining if a service provider possesses a variable interest in a VIE and ends the deferral granted to investment companies for application of the VIE consolidation model. ASU 2015-02 is effective for annual periods, and interim periods therein, beginning after December 15, 2015. We are currently evaluating the impact the adoption of Topic 810 will have on our financial statements. In April 2015, the FASB issued ASU 2015-3, Simplifying the Presentation of Debt Issuance Costs, which changes the presentation of debt issuance costs in financial statements. ASU 2015-3 requires an entity to present such costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs will continue to be reported as interest expense. ASU 2015-3 is effective for annual reporting periods beginning after December 15, 2016. Early adoption is permitted. The new guidance will be applied retrospectively to each prior period presented. The Company will adopt ASU 2015-3 on January 1, 2016, and it is not expected to have a material impact on the Company’s consolidated financial statements and disclosures. In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments. The update requires that acquiring entities in a business combination recognize adjustments to provisional amounts identified in the reporting period in which the adjustment amounts are determined, including the cumulative effect of the change in provisional amount, as if the accounting had been completed at the acquisition date. Adjustments related to previous reporting periods must be disclosed by income statement line item, either on the face of the income statement or in the notes, in the period for which the adjustment was identified. ASU 2015-16 is effective for annual reporting periods beginning after December 15, 2015. The Company does not expect ASU 2015-16 to have a material impact on the Company’s consolidated financial statements and disclosures. In February 2016, the FASB issued ASU 2016-02, Leases. The update amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. ASU 2016-02 will be effective for annual reporting periods beginning after December 15, 2018. Early adoption is permitted. We are currently evaluating the impact of adopting the new leases standard on our consolidated financial statements.

Organization and Description 22

Organization and Description of Business (Tables)	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Predecessor and Company's Statement of Operations	The following is a summary of the Predecessor Statements of Operations for the period from January 1, 2014 through April 20, 2014, and the Company’s Statement of Operations for the period from April 21, 2014 through December 31, 2014. These amounts are included in the consolidated and combined statement of operations herein for the year ended December 31, 2014. All balances as of December 31, 2013 are those of the Predecessor. (in thousands) Predecessor City Office REIT, Inc. January 1, 2014 April 21, 2014 through Revenues: Rental income $ 8,865 $ 24,371 Expense reimbursement 555 2,314 Other 343 448 Total Revenues 9,763 27,133 Operating Expenses Property operating expenses 3,775 10,557 Acquisition costs 806 1,327 Stock-based compensation — 1,091 General and administrative 79 1,235 Base management fees — 682 Depreciation and amortization 3,862 10,867 Total Operating Expenses 8,522 25,759 Operating income 1,241 1,374 Interest expense, net (3,772 ) (7,180 ) Change in fair value of earn-out — (1,048 ) Gain on equity investment 4,475 — Net income / (loss) 1,944 (6,854 ) Net loss / (income) attributable to non-controlling interests in properties 29 (111 ) Net income attributable to Predecessor 1,973 — Net loss attributable to Operating Partnership unitholders’ non-controlling interests 1,955 Net loss attributable to stockholders (5,010 )

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Schedule of Estimated Useful Lives of Real Estate Properties	Real estate properties are stated at cost less accumulated depreciation, except land. Depreciation is computed on the straight-line basis over estimated useful lives of: Years Buildings and improvement 29-50 Furniture, fixtures and equipment 4-7

Rents Receivable, Net (Tables)

Rents Receivable, Net (Tables)	12 Months Ended
	Dec. 31, 2015
Text Block [Abstract]
Components of Rents Receivable	The Company’s rents receivable is comprised of the following components (in thousands): December 31, December 31, Billed receivables $ 588 $ 585 Straight-line receivables 13,794 7,396 Total rents receivable $ 14,382 $ 7,981

Real Estate Investments (Tables

Real Estate Investments (Tables)	12 Months Ended
	Dec. 31, 2015
Schedule of Acquired Properties	During the years ended December 31, 2015, 2014 and 2013 the Company acquired the following properties: Property Date Acquired Percentage Owned Corporate Parkway May 2013 100 % Washington Group Plaza June 2013 100 % (1) Cherry Creek January 2014 100 % Plaza 25 June 2014 100 % Lake Vista Pointe July 2014 100 % Florida Research Park Nov 2014 100 % Logan Tower Feb 2015 100 % Superior Pointe June 2015 100 % DTC Crossroads June 2015 100 % 190 Office Center Sept 2015 100 % Intellicenter Sept 2015 100 % (1) At acquisition of Washington Group Plaza in June 2013, the Company held a 90% interest in each of the properties. Upon the IPO and Formation Transactions, the Company increased its ownership share in the Washington Group Plaza property to 100%.
Schedule of Allocation of Purchase Price of Assets Acquired and Liabilities Assumed	The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2015 (in thousands): Logan Superior DTC 190 Office Intellicenter Total December 31, Land $ 1,306 $ 3,153 $ 7,137 $ 7,162 $ 5,244 $ 24,002 Buildings and improvements 7,844 19,250 22,545 39,367 31,359 120,365 Tenant improvements 353 584 638 323 2,919 4,817 Acquired intangible assets 1,274 2,866 4,152 5,673 7,742 21,707 Prepaid expenses and other assets — 24 — 64 — 88 Accounts payable and other liabilities (48 ) (316 ) (605 ) (720 ) (321 ) (2,010 ) Lease intangible liabilities (306 ) (53 ) (353 ) (805 ) (664 ) (2,181 ) Total Consideration $ 10,423 $ 25,508 $ 33,514 $ 51,064 $ 46,279 $ 166,788 The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2014 (in thousands): Cherry Creek Plaza 25 Lake Vista Florida Research Total December 31, 2014 Land $ 25,745 $ 1,764 $ 4,115 $ 4,415 $ 36,039 Buildings and improvements 15,771 18,487 17,562 16,376 68,196 Tenant improvements 4,372 2,076 3,038 1,399 10,885 Acquired intangible assets 12,009 2,924 3,685 4,309 22,927 Prepaid expenses and other assets — 2 30 104 136 Accounts payable and other liabilities (815 ) (641 ) (1,733 ) (41 ) (3,230 ) Lease intangible liabilities (249 ) (328 ) — — (577 ) Total Consideration $ 56,833 $ 24,284 $ 26,697 $ 26,562 $ 134,376 The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2013 (in thousands): Washington Group Plaza Corporate Total December 31, 2013 Land $ 12,748 $ 3,756 $ 16,504 Buildings and improvements 18,000 18,580 36,580 Tenant improvements 2,717 1,909 4,626 Prepaid expenses and other assets 219 6 225 Deferred leasing costs 12 — 12 Acquired intangible assets 10,470 4,149 14,619 Accounts payable and accrued liabilities (1,234 ) — (1,234 ) Acquired intangible liabilities (18 ) — (18 ) Total Consideration $ 42,914 $ 28,400 $ 71,314
Schedule of Operating Results Relating to Acquired Entities	The following table represents the results of the properties’ operations since the date of acquisition on a stand-alone basis (in thousands). Year ended Year ended Year ended Operating revenues $ 10,047 $ 11,282 $ 7,155 Operating expenses (9,957 ) (10,007 ) (7,570 ) Interest (1,192 ) (3,987 ) (1,754 ) $ (1,102 ) $ (2,712 ) $ (2,169 )
Cherry Creek [Member]
Schedule of Realized Gain Loss on Acquisition	The Company recognized expenses relating to the Cherry Creek acquisition of $806,344 for the year ended December 31, 2014. A gain of $4.5 million was recognized from the fair value adjustment associated with the Predecessor’s original ownership due to a change in control, calculated as follows (in thousands): Fair value of assets and liabilities acquired $ 56,833 Less existing mortgage in Cherry Creek (36,000 ) 20,833 Less cash paid to seller (12,021 ) Fair value of 42.3% equity interest 8,812 Carrying value of investment in Cherry Creek (4,337 ) Gain on existing 42.3% equity interest $ 4,475
Plaza Twenty Five Lake Vista Pointe Florida Research Park Logan Tower Superior Pointe DTC Crossroads One Ninety Office Center One and Two Intellicenter [Member]
Schedule of Business Acquisition Pro Forma Results of Operations	The following table presents the unaudited revenues and income from continuing operations for Plaza 25, Lake Vista Pointe, Florida Research Park, Logan Tower, Superior Pointe, DTC Crossroads, 190 Office Center and Intellicenter on a pro forma basis as if the Company had completed the acquisition of the properties as of January 1, 2014 (in thousands): Year ended Year ended Total revenues as reported by City Office REIT, Inc. and Predecessor $ 55,052 $ 36,896 Plus: Plaza 25 — 1,650 Lake Vista Pointe — 1,967 Florida Research Park — 2,352 Logan Tower 143 1,530 Superior Pointe 1,666 3,178 DTC Crossroads 1,904 3,554 190 Office Center 3,798 5,789 Intellicenter 3,196 4,210 Proforma total revenues $ 65,759 $ 61,126 Total operating income as reported by the City Office REIT, Inc. and Predecessor $ 4,527 $ 2,615 Property acquisition costs 2,959 (2,959 ) Plus: Plaza 25 — (67 ) Lake Vista Pointe — 397 Florida Research Park — (758 ) Logan Tower (13 ) 98 Superior Pointe (86 ) (270 ) DTC Crossroads (59 ) (102 ) 190 Office Center (233 ) (537 ) Intellicenter 930 847 Proforma operating income/(loss) $ 8,025 $ (736 )

Lease Intangibles (Tables)

Lease Intangibles (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Lease Intangibles and Value of Assumed Lease Obligations	Lease intangibles and the value of assumed lease obligations as of December 31, 2015 and 2014 were comprised as follows (in thousands): December 31, 2015 Above In Place Leasing Total Below Below Total Cost $ 5,616 44,478 17,530 67,624 (2,928 ) (138 ) (3,066 ) Accumulated amortization (2,830 ) (17,641 ) (6,163 ) (26,634 ) 750 24 774 $ 2,786 26,837 11,367 40,990 (2,178 ) (114 ) (2,292 ) December 31, 2014 Above In Place Leasing Total Below Below Total Cost $ 4,762 28,505 12,926 46,193 (746 ) (138 ) (884 ) Accumulated Amortization (1,985 ) (11,159 ) (3,658 ) (16,802 ) 258 20 278 $ 2,777 17,346 9,268 29,391 (488 ) (118 ) (606 )
Estimated Aggregate Amortization Expense for Lease Intangibles	The estimated aggregate amortization expense for lease intangibles for the five succeeding years and in the aggregate are as follows (in thousands): 2016 11,195 2017 8,473 2018 5,469 2019 4,041 2020 3,218 Thereafter 6,302 $ 38,698

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Summary of Secured Indebtedness	The following table summarizes the secured indebtedness as of December 31, 2015 and 2014 (in thousands): Property December 31, December 31, Interest Rate as Maturity Term Loan (1) $ 14,000 $ — LIBOR+6.00 % (2) September 2016 Revolving Credit Facility (3) 50,000 — LIBOR +2.75 % (2) June 2018 Washington Group Plaza (4) 33,669 34,322 3.85 July 2018 AmberGlen Mortgage Loan (5) 24,729 25,158 4.38 May 2019 Midland Life Insurance (6) 95,000 95,000 4.34 May 2021 Lake Vista Pointe (4) 18,460 18,460 4.28 August 2024 Florida Research Park (4)(7) 17,000 17,000 4.44 December 2024 Plaza 25 (4)(8) 17,000 — 4.10 July 2025 190 Office Center (8) 41,250 — 4.79 October 2025 Intellicenter (8) 33,563 — 4.65 October 2025 Total $ 344,671 $ 189,940 All interest rates are fixed interest rates with the exception of the revolving credit facility (“Revolving Credit Facility”) and Term Loan (“Term Loan”) as explained in footnote 1 below. (1) The Company is required to maintain a maximum total leverage ratio of 65%, a minimum liquidity of $3 million and a debt service coverage ratio of no less than 1.60x. (2) As of December 31, 2015, the one month LIBOR rate was 0.40% (3) At December 31, 2015 the Revolving Credit Facility had $75 million authorized and $50 million drawn. In addition, the Revolving Credit Facility has an accordion feature that will permit the Company to borrow up to $150 million, subject to additional collateral availability and lender approval. The Credit Agreement has a maturity date of June 26, 2018, which may be extended to June 26, 2019 at the Company’s option upon meeting certain conditions. The Revolving Credit Facility requires the Company to maintain a fixed charge coverage ratio of no less than 1.60x. At December 31, 2015, the Revolving Credit Facility is cross-collateralized by Central Fairwinds, Logan Tower, Superior Pointe and DTC Crossroads. On July 14, 2015, the Company entered into an Amendment and Joinder to its Amended and Restated Credit Agreement which increased the authorized borrowing capacity under the Credit Agreement from $35 million to $75 million. (4) Interest on mortgage loan is payable monthly plus principal based on 360 months of amortization. (5) The Company is required to maintain a minimum net worth of $25 million and a minimum liquidity of $2 million. (6) The mortgage loan is cross-collateralized by Corporate Parkway, Cherry Creek and City Center. Interest only until June 2016 then interest payable monthly plus principal based on 360 months of amortization. The loan bears a fixed interest rate of 4.34% and matures on May 6, 2021. (7) The Company is required to maintain a minimum net worth of $17 million, minimum liquidity of $1.7 million and a debt service coverage ratio of no less than 1.15x. (8) The Company is required to maintain a debt service coverage ratio of no less than 1.45x, 1.15x, 1.20x respectively for each of Plaza 25, 190 Office Center and Intellicenter.
Schedule of Principal Repayments of Mortgage Payable	The scheduled principal repayments of mortgage payable as of December 31, 2015 are as follows (in thousands): 2016 $ 16,034 2017 3,036 2018 85,161 2019 26,629 2020 3,917 Thereafter 209,894 Total $ 344,671

Future Minimum Rent Schedule (T

Future Minimum Rent Schedule (Tables)	12 Months Ended
	Dec. 31, 2015
Leases [Abstract]
Schedule of Future Minimum Lease Payments under Noncancellable Operating Leases	Future minimum lease payments to be received as of December 31, 2015 under noncancellable operating leases for the next five years and thereafter are as follows (in thousands): 2016 $ 52,702 2017 51,421 2018 44,135 2019 38,224 2020 34,882 Thereafter 132,466 $ 353,830

Stockholder's Equity (Tables)

Stockholder's Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Summary of Noncontrolling Interests	The following table summarizes the non-controlling interests in properties as of December 31, 2015 and December 31, 2014 (in thousands): December 31, 2015 December 31, 2014 City Center $ (5 ) $ 32 Central Fairwinds 484 422 AmberGlen (1,154 ) (1,208 ) $ (675 ) $ (754 )
Schedule of Distributions Declared per Share and Unit	During the year ended December 31, 2015, the Company declared the following distributions per share and unit: Period Distribution per Declaration Date Record Date Payment Date January 1, 2015 – March 31, 2015 $ 0.235 March 19,2015 April 3, 2015 April 17, 2015 April 1, 2015 – June 30, 2015 0.235 June 15,2015 July 3, 2015 July 17, 2015 July 1, 2015 – September 30, 2015 0.235 September 15,2015 October 5, 2015 October 19, 2015 October 1, 2015 – December 31, 2015 0.235 December 18,2015 January 6, 2016 January 20, 2016 Total $ 0.940

Quarterly Financial Informati30

Quarterly Financial Information (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Summary of Selected Quarterly Financial Data	The following tables summarize certain selected quarterly financial data for 2015 and 2014 (in thousands, except per share data): 2015 Quarters Fourth Third Second First Operating revenue $ 17,543 $ 14,616 $ 11,634 $ 11,259 Net loss (1,798 ) (2,984 ) (2,086 ) (799 ) Net loss attributable to stockholders (1,551 ) (2,499 ) (1,798 ) (743 ) Net loss per share $ (0.12 ) $ (0.20 ) $ (0.15 ) $ (0.06 ) 2014 Quarters Fourth Third Second First Operating revenue $ 10,529 $ 9,998 $ 8,393 $ 7,976 Net (loss)/income (1,673 ) (2,374 ) (3,067 ) 2,204 Net loss attributable to stockholders (1,299 ) (1,767 ) (1,944 ) — Net loss per share $ (0.14 ) $ (0.22 ) $ (0.24 ) $ —

Organization and Description 31

Organization and Description of Business - Additional Information (Detail) $ / shares in Units, $ in Thousands	May. 09, 2014USD ($)$ / sharesshares	Apr. 21, 2014USD ($)Property$ / sharesshares	Jan. 02, 2014USD ($)	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)	Apr. 20, 2014Property	Dec. 31, 2013	Jun. 30, 2013
Business Description And Basis Of Presentation [Line Items]
Company formation date				Nov. 26, 2013
Operation commencement date				Apr. 21, 2014
Common stock issued in IPO, shares | shares		5,800,000		5,800,000
Common stock issued in IPO, price per share | $ / shares		$ 12.50
IPO Closed date				Apr. 21, 2014
Gross proceeds from issuance of public offering		$ 72,500
Net proceeds from issuance of public offering		63,400		$ 63,400
Underwriting discounts		5,100
Other expenses relating to IPO		4,000
Purchase consideration, cash paid		$ 19,400
Percent of ownership interest acquired in properties				80.30%	80.80%
Number of properties in which loan refinanced | Property		3
Washington Group Plaza [Member]
Business Description And Basis Of Presentation [Line Items]
Percent of ownership interest acquired in properties		100.00%					100.00%	90.00%
Corporate Parkway [Member]
Business Description And Basis Of Presentation [Line Items]
Percent of ownership interest acquired in properties							100.00%
Overallotment Option [Member]
Business Description And Basis Of Presentation [Line Items]
Common stock issued in IPO, price per share | $ / shares	$ 12.50
Shares issued to underwriters under overallotment option | shares	782,150
Gross proceeds from issuance of public offering	$ 9,800
Net proceeds from issuance of public offering	9,100
Underwriting discounts	700
Common stock redemption value, in cash	$ 9,100
City Office REIT Operating Partnership, L.P. [Member] | Overallotment Option [Member] | Washington Group Plaza [Member]
Business Description And Basis Of Presentation [Line Items]
Percent of ownership interest acquired in properties		100.00%
City Office REIT Operating Partnership, L.P. [Member] | Overallotment Option [Member] | Cherry Creek [Member]
Business Description And Basis Of Presentation [Line Items]
Percent of ownership interest acquired in properties		100.00%
City Office REIT Operating Partnership, L.P. [Member] | Overallotment Option [Member] | Corporate Parkway [Member]
Business Description And Basis Of Presentation [Line Items]
Percent of ownership interest acquired in properties		100.00%
City Office REIT Operating Partnership, L.P. [Member] | Overallotment Option [Member] | AmberGlen [Member]
Business Description And Basis Of Presentation [Line Items]
Percent of ownership interest acquired in properties		76.00%
City Office REIT Operating Partnership, L.P. [Member] | Overallotment Option [Member] | Central Fairwinds [Member]
Business Description And Basis Of Presentation [Line Items]
Percent of ownership interest acquired in properties		90.00%
City Office REIT Operating Partnership, L.P. [Member] | Overallotment Option [Member] | City Center Property [Member]
Business Description And Basis Of Presentation [Line Items]
Percent of ownership interest acquired in properties		95.00%
Non-Recourse Mortgage Loan [Member]
Business Description And Basis Of Presentation [Line Items]
Non-recourse mortgage loan, amount		$ 95,000
Non-recourse mortgage loan, interest rate		4.34%
Non-recourse mortgage loan, maturity date				May 6, 2021
Predecessor [Member]
Business Description And Basis Of Presentation [Line Items]
Number of properties acquired | Property						6
Predecessor [Member] | Cherry Creek [Member]
Business Description And Basis Of Presentation [Line Items]
Purchase consideration, cash paid			$ 12,000		$ 12,021
Percent of ownership interest acquired in properties			57.70%		100.00%
Common Units [Member]
Business Description And Basis Of Presentation [Line Items]
Purchase consideration, units issued | shares		3,731,209		3,251,904
Common Units [Member] | Overallotment Option [Member]
Business Description And Basis Of Presentation [Line Items]
Previously issued number of redeemable shares | shares	479,305
Common Stock [Member]
Business Description And Basis Of Presentation [Line Items]
Purchase consideration, units issued | shares		1,858,860
Common Stock [Member] | Overallotment Option [Member]
Business Description And Basis Of Presentation [Line Items]
Previously issued number of redeemable shares | shares	248,095

Organization and Description 32

Organization and Description of Business - Summary of Predecessor and Company's Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Apr. 20, 2014	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues:
Rental income										$ 24,371	$ 48,009
Expense reimbursement										2,314	5,808
Other										448	1,235
Total Revenues	$ 17,543	$ 14,616	$ 11,634	$ 11,259	$ 10,529	$ 9,998	$ 8,393	$ 7,976		27,133	55,052
Operating Expenses:
Property operating expenses										10,557	20,420
Acquisition costs										1,327	2,959
Stock-based compensation										1,091	1,907
General and administrative										1,235	1,821
Base management fees										682	1,302
Depreciation and amortization										10,867	21,624
Total Operating Expenses										25,759	50,525
Operating income										1,374	4,527
Interest expense, net										(7,180)
Change in fair value of earn-out										(1,048)	841
Net income / (loss)	(1,798)	(2,984)	(2,086)	(799)	(1,673)	(2,374)	(3,067)	$ 2,204		(6,854)	(7,667)
Net loss / (income) attributable to non-controlling interests in properties										(111)
Net income attributable to Predecessor											(6,591)
Net loss attributable to Operating Partnership unitholders' non-controlling interests										1,955	$ 1,576
Net loss attributable to stockholders	$ (1,551)	$ (2,499)	$ (1,798)	$ (743)	$ (1,299)	$ (1,767)	$ (1,944)			$ (5,010)
Predecessor [Member]
Revenues:
Rental income									$ 8,865			$ 33,236	$ 18,428
Expense reimbursement									555			2,869	1,316
Other									343			791	747
Total Revenues									9,763			36,896	20,491
Operating Expenses:
Property operating expenses									3,775			14,332	8,466
Acquisition costs									806			2,133	1,479
Stock-based compensation												1,091
General and administrative									79			1,314
Base management fees												682
Depreciation and amortization									3,862			14,729	7,775
Total Operating Expenses									8,522			34,281	17,720
Operating income									1,241			2,615	2,771
Interest expense, net									(3,772)
Change in fair value of earn-out												1,048
Gain on equity investment									4,475			4,475
Net income / (loss)									1,944			(4,910)	$ (4,177)
Net loss / (income) attributable to non-controlling interests in properties									29
Net income attributable to Predecessor									$ 1,973			(5,010)
Net loss attributable to Operating Partnership unitholders' non-controlling interests												$ 1,955

Summary of Significant Accoun33

Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of Real Estate Properties (Detail)	12 Months Ended
	Dec. 31, 2015
Minimum [Member] | Buildings and Improvement [Member]
Property, Plant and Equipment [Line Items]
Real estate properties estimated useful lives	29 years
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Real estate properties estimated useful lives	4 years
Maximum [Member] | Buildings and Improvement [Member]
Property, Plant and Equipment [Line Items]
Real estate properties estimated useful lives	50 years
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Real estate properties estimated useful lives	7 years

Summary of Significant Accoun34

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	Dec. 23, 2014	Apr. 21, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 10, 2014
Summary Of Significant Accounting Policies [Line Items]
Impairment charges					$ 0
Percentage of REIT taxable income distributed to stockholders			90.00%
Common stock issued			12,517,777	12,279,110
Percent of ownership interest acquired in properties			80.30%	80.80%
Potentially dilutive shares outstanding			3,070,405	2,915,709
Accumulated amortization of deferred leasing costs			$ 2,257,551	$ 1,496,605
Secondary Public Offering Total [Member]
Summary Of Significant Accounting Policies [Line Items]
Common stock issued						3,750,000
Shares issued to underwriters under overallotment option	512,664
Common Units [Member]
Summary Of Significant Accounting Policies [Line Items]
Purchase consideration, units issued		3,731,209	3,251,904
Common Units [Member] | Secondary Public Offering Total [Member]
Summary Of Significant Accounting Policies [Line Items]
Previously issued number of redeemable shares	336,195
Common Stock [Member]
Summary Of Significant Accounting Policies [Line Items]
Purchase consideration, units issued		1,858,860
Common Stock [Member] | Secondary Public Offering Total [Member]
Summary Of Significant Accounting Policies [Line Items]
Previously issued number of redeemable shares	176,469

Rents Receivable, Net - Compone

Rents Receivable, Net - Components of Rents Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Receivables Net [Line Items]
Billed receivables	$ 588
Straight-line receivables	13,794
Total rents receivable	$ 14,382	$ 7,981
Predecessor [Member]
Receivables Net [Line Items]
Billed receivables		585
Straight-line receivables		7,396
Total rents receivable		$ 7,981

Real Estate Investments - Sched

Real Estate Investments - Schedule of Acquired Properties through Operating Partnership (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Apr. 21, 2014	Jan. 02, 2014	Jun. 30, 2013
Business Acquisition [Line Items]
Real estate property, percentage owned	80.30%	80.80%
Corporate Parkway [Member]
Business Acquisition [Line Items]
Real estate property, date acquired			2013-05
Real estate property, percentage owned			100.00%
Washington Group Plaza [Member]
Business Acquisition [Line Items]
Real estate property, date acquired			2013-06
Real estate property, percentage owned			100.00%	100.00%		90.00%
Plaza 25 [Member]
Business Acquisition [Line Items]
Real estate property, date acquired		2014-06
Real estate property, percentage owned		100.00%
Lake Vista Pointe [Member]
Business Acquisition [Line Items]
Real estate property, date acquired		2014-07
Real estate property, percentage owned		100.00%
Florida Research Park [Member]
Business Acquisition [Line Items]
Real estate property, date acquired		2014-11
Real estate property, percentage owned		100.00%
Logan Tower [Member]
Business Acquisition [Line Items]
Real estate property, date acquired	2015-02
Real estate property, percentage owned	100.00%
Superior Pointe [Member]
Business Acquisition [Line Items]
Real estate property, date acquired	2015-06
Real estate property, percentage owned	100.00%
DTC Crossroads [Member]
Business Acquisition [Line Items]
Real estate property, date acquired	2015-06
Real estate property, percentage owned	100.00%
190 Office Center [Member]
Business Acquisition [Line Items]
Real estate property, date acquired	2015-09
Real estate property, percentage owned	100.00%
Intellicenter [Member]
Business Acquisition [Line Items]
Real estate property, date acquired	2015-09
Real estate property, percentage owned	100.00%
Predecessor [Member] | Cherry Creek [Member]
Business Acquisition [Line Items]
Real estate property, date acquired		2014-01
Real estate property, percentage owned		100.00%			57.70%

Real Estate Investments - Sch37

Real Estate Investments - Schedule of Acquired Properties through Operating Partnership (Parenthetical) (Detail)	Dec. 31, 2015	Dec. 31, 2014	Apr. 21, 2014	Dec. 31, 2013	Jun. 30, 2013
Business Acquisition [Line Items]
Real estate property, percentage owned	80.30%	80.80%
Washington Group Plaza [Member]
Business Acquisition [Line Items]
Real estate property, percentage owned			100.00%	100.00%	90.00%

Real Estate Investments - Sch38

Real Estate Investments - Schedule of Allocation of Purchase Price of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Land	$ 24,002	$ 36,039	$ 16,504
Buildings and improvements	120,365	68,196	36,580
Tenant improvements	4,817	10,885	4,626
Prepaid expenses and other assets	88	136	225
Deferred leasing costs			12
Acquired intangible assets	21,707	22,927	14,619
Accounts payable and other/accrued liabilities	(2,010)	(3,230)	(1,234)
Acquired intangible liabilities			(18)
Lease intangible liabilities	(2,181)	(577)
Total Consideration	166,788	134,376	71,314
Logan Tower [Member]
Business Acquisition [Line Items]
Land	1,306
Buildings and improvements	7,844
Tenant improvements	353
Acquired intangible assets	1,274
Accounts payable and other/accrued liabilities	(48)
Lease intangible liabilities	(306)
Total Consideration	10,423
Superior Pointe [Member]
Business Acquisition [Line Items]
Land	3,153
Buildings and improvements	19,250
Tenant improvements	584
Prepaid expenses and other assets	24
Acquired intangible assets	2,866
Accounts payable and other/accrued liabilities	(316)
Lease intangible liabilities	(53)
Total Consideration	25,508
DTC Crossroads [Member]
Business Acquisition [Line Items]
Land	7,137
Buildings and improvements	22,545
Tenant improvements	638
Acquired intangible assets	4,152
Accounts payable and other/accrued liabilities	(605)
Lease intangible liabilities	(353)
Total Consideration	33,514
Intellicenter [Member]
Business Acquisition [Line Items]
Land	5,244
Buildings and improvements	31,359
Tenant improvements	2,919
Acquired intangible assets	7,742
Accounts payable and other/accrued liabilities	(321)
Lease intangible liabilities	(664)
Total Consideration	46,279
190 Office Center [Member]
Business Acquisition [Line Items]
Land	7,162
Buildings and improvements	39,367
Tenant improvements	323
Prepaid expenses and other assets	64
Acquired intangible assets	5,673
Accounts payable and other/accrued liabilities	(720)
Lease intangible liabilities	(805)
Total Consideration	$ 51,064
Plaza 25 [Member]
Business Acquisition [Line Items]
Land		1,764
Buildings and improvements		18,487
Tenant improvements		2,076
Prepaid expenses and other assets		2
Acquired intangible assets		2,924
Accounts payable and other/accrued liabilities		(641)
Lease intangible liabilities		(328)
Total Consideration		24,284
Lake Vista Pointe [Member]
Business Acquisition [Line Items]
Land		4,115
Buildings and improvements		17,562
Tenant improvements		3,038
Prepaid expenses and other assets		30
Acquired intangible assets		3,685
Accounts payable and other/accrued liabilities		(1,733)
Total Consideration		26,697
Florida Research Park [Member]
Business Acquisition [Line Items]
Land		4,415
Buildings and improvements		16,376
Tenant improvements		1,399
Prepaid expenses and other assets		104
Acquired intangible assets		4,309
Accounts payable and other/accrued liabilities		(41)
Total Consideration		26,562
Predecessor [Member] | Cherry Creek [Member]
Business Acquisition [Line Items]
Land		25,745
Buildings and improvements		15,771
Tenant improvements		4,372
Acquired intangible assets		12,009
Accounts payable and other/accrued liabilities		(815)
Lease intangible liabilities		(249)
Total Consideration		$ 56,833
Predecessor [Member] | Washington Group Plaza [Member]
Business Acquisition [Line Items]
Land			12,748
Buildings and improvements			18,000
Tenant improvements			2,717
Prepaid expenses and other assets			219
Deferred leasing costs			12
Acquired intangible assets			10,470
Accounts payable and other/accrued liabilities			(1,234)
Acquired intangible liabilities			(18)
Total Consideration			42,914
Predecessor [Member] | Corporate Parkway [Member]
Business Acquisition [Line Items]
Land			3,756
Buildings and improvements			18,580
Tenant improvements			1,909
Prepaid expenses and other assets			6
Acquired intangible assets			4,149
Total Consideration			$ 28,400

Real Estate Investments - Addit

Real Estate Investments - Additional Information (Detail) - USD ($)	Apr. 21, 2014	Jan. 02, 2014	Apr. 20, 2014	Dec. 31, 2014	Dec. 31, 2015
Business Acquisition [Line Items]
Business acquisition, ownership percentage				80.80%	80.30%
Business acquisition, purchase consideration	$ 19,400,000
Business acquisition, deferred financing costs				$ 2,901,000	$ 3,393,000
Predecessor [Member]
Business Acquisition [Line Items]
Gain on equity investment			$ 4,475,000	$ 4,475,000
Predecessor [Member] | Cherry Creek [Member]
Business Acquisition [Line Items]
Business acquisition, ownership percentage		57.70%		100.00%
Business acquisition, purchase consideration		$ 12,000,000		$ 12,021,000
Business acquisition, liabilities assumed		50,000,000
Repayment of debt		36,000,000
Business acquisition, deferred financing costs		1,200,000
Business acquisition, transaction costs		$ 800,000
Expenses related to acquisition				806,344
Gain on equity investment				$ 4,475,000

Real Estate Investments - Sch40

Real Estate Investments - Schedule of Realized Gain Loss on Acquisition (Detail) - USD ($) $ in Thousands	Apr. 21, 2014	Jan. 02, 2014	Apr. 20, 2014	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2013
Business Acquisition [Line Items]
Fair value of assets and liabilities acquired				$ 134,376	$ 166,788	$ 71,314
Less cash paid to seller	$ (19,400)
Predecessor [Member]
Business Acquisition [Line Items]
Gain on existing 42.3% equity interest			$ 4,475	4,475
Predecessor [Member] | Cherry Creek [Member]
Business Acquisition [Line Items]
Fair value of assets and liabilities acquired				56,833
Less existing mortgage in Cherry Creek				(36,000)
Fair value of assets and liabilities acquired, after mortgage				20,833
Less cash paid to seller		$ (12,000)		(12,021)
Fair value of 42.3% equity interest				8,812
Carrying value of investment in Cherry Creek				(4,337)
Gain on existing 42.3% equity interest				$ 4,475

Real Estate Investments - Sch41

Real Estate Investments - Schedule of Realized Gain Loss on Acquisition (Parenthetical) (Detail)	Dec. 31, 2014
Predecessor [Member] | Cherry Creek [Member]
Business Acquisition [Line Items]
Percentage of equity interest	42.30%

Real Estate Investments - Sch42

Real Estate Investments - Schedule of Operating Results Relating to Acquired Entities (Detail) - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 20, 2014	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Operating revenues		$ 24,371	$ 48,009
Operating expenses		$ (10,557)	(20,420)
Logan Tower Superior Pointe DTC Crossroads Intellicenter 190 Office Center [Member]
Business Acquisition [Line Items]
Operating revenues			10,047
Operating expenses			(9,957)
Interest			(1,192)
Total			$ (1,102)
Predecessor [Member]
Business Acquisition [Line Items]
Operating revenues	$ 8,865			$ 33,236	$ 18,428
Operating expenses	$ (3,775)			(14,332)	(8,466)
Predecessor [Member] | Cherry Creek Plaza 25 Lake Vista Pointe Florida Research Park [Member]
Business Acquisition [Line Items]
Operating revenues				11,282	7,155
Operating expenses				(10,007)	(7,570)
Interest				(3,987)	(1,754)
Total				$ (2,712)	$ (2,169)

Real Estate Investments - Sch43

Real Estate Investments - Schedule of Business Acquisition Pro Forma Results of Operations (Detail) - USD ($) $ in Thousands

3 Months Ended

4 Months Ended

8 Months Ended

12 Months Ended

Dec. 31, 2015

Sep. 30, 2015

Jun. 30, 2015

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Apr. 20, 2014

Dec. 31, 2014

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Business Acquisition [Line Items]

Total revenues as reported by City Office REIT, Inc. and Predecessor

$ 17,543

$ 14,616

$ 11,634

$ 11,259

$ 10,529

$ 9,998

$ 8,393

$ 7,976

$ 27,133

$ 55,052

Pro forma total revenues

65,759

Total operating income as reported by the City Office REIT, Inc. and Predecessor

$ 1,374

4,527

Property acquisition costs

2,959

Proforma operating income/(loss)

8,025

Logan Tower [Member]

Business Acquisition [Line Items]

Pro forma total revenues

143

Proforma operating income/(loss)

(13)

Superior Pointe [Member]

Business Acquisition [Line Items]

Pro forma total revenues

1,666

Proforma operating income/(loss)

(86)

DTC Crossroads [Member]

Business Acquisition [Line Items]

Pro forma total revenues

1,904

Proforma operating income/(loss)

(59)

190 Office Center [Member]

Business Acquisition [Line Items]

Pro forma total revenues

3,798

Proforma operating income/(loss)

(233)

Intellicenter [Member]

Business Acquisition [Line Items]

Pro forma total revenues

3,196

Proforma operating income/(loss)

$ 930

Predecessor [Member]

Business Acquisition [Line Items]

Total revenues as reported by City Office REIT, Inc. and Predecessor

$ 9,763

$ 36,896

$ 20,491

Pro forma total revenues

61,126

Total operating income as reported by the City Office REIT, Inc. and Predecessor

$ 1,241

2,615

$ 2,771

Property acquisition costs

(2,959)

Proforma operating income/(loss)

(736)

Predecessor [Member] | Plaza 25 [Member]

Business Acquisition [Line Items]

Pro forma total revenues

1,650

Proforma operating income/(loss)

(67)

Predecessor [Member] | Lake Vista Pointe [Member]

Business Acquisition [Line Items]

Pro forma total revenues

1,967

Proforma operating income/(loss)

397

Predecessor [Member] | Florida Research Park [Member]

Business Acquisition [Line Items]

Pro forma total revenues

2,352

Proforma operating income/(loss)

(758)

Predecessor [Member] | Logan Tower [Member]

Business Acquisition [Line Items]

Pro forma total revenues

1,530

Proforma operating income/(loss)

98

Predecessor [Member] | Superior Pointe [Member]

Business Acquisition [Line Items]

Pro forma total revenues

3,178

Proforma operating income/(loss)

(270)

Predecessor [Member] | DTC Crossroads [Member]

Business Acquisition [Line Items]

Pro forma total revenues

3,554

Proforma operating income/(loss)

(102)

Predecessor [Member] | 190 Office Center [Member]

Business Acquisition [Line Items]

Pro forma total revenues

5,789

Proforma operating income/(loss)

(537)

Predecessor [Member] | Intellicenter [Member]

Business Acquisition [Line Items]

Pro forma total revenues

4,210

Proforma operating income/(loss)

$ 847

Lease Intangibles - Schedule of

Lease Intangibles - Schedule of Lease Intangibles and Value of Assumed Lease Obligations (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Cost	$ 67,624	$ 46,193
Cost, Below market Leases	(2,928)	(746)
Cost, Below market ground lease	(138)	(138)
Cost	(3,066)	(884)
Accumulated amortization	(26,634)	(16,802)
Accumulated amortization, Below market Leases	750	258
Accumulated amortization, Below market ground lease	24	20
Accumulated amortization	774	278
Total	40,990	29,391
Total, Below market Leases	(2,178)	(488)
Total, Below market ground lease	(114)	(118)
Total	(2,292)	(606)
Above Market Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	5,616	4,762
Accumulated amortization	(2,830)	(1,985)
Total	2,786	2,777
In Place Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	44,478	28,505
Accumulated amortization	(17,641)	(11,159)
Total	26,837	17,346
Leasing Commissions [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	17,530	12,926
Accumulated amortization	(6,163)	(3,658)
Total	$ 11,367	$ 9,268

Lease Intangibles - Estimated A

Lease Intangibles - Estimated Aggregate Amortization Expense for Lease Intangibles (Detail) $ in Thousands	Dec. 31, 2015USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,016	$ 11,195
2,017	8,473
2,018	5,469
2,019	4,041
2,020	3,218
Thereafter	6,302
Total	$ 38,698

Debt - Summary of Secured Indeb

Debt - Summary of Secured Indebtedness (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Secured indebtedness	$ 344,671	$ 344,671	$ 189,940
Term Loan [Member]
Debt Instrument [Line Items]
Secured indebtedness	14,000	$ 14,000
Maturity		2016-09
Washington Group Plaza [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 33,669	$ 33,669	34,322
Interest Rate	3.85%	3.85%
Maturity		2018-07
AmberGlen Mortgage Loan [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 24,729	$ 24,729	25,158
Interest Rate	4.38%	4.38%
Maturity		2019-05
Midland Life Insurance [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 95,000	$ 95,000	95,000
Interest Rate	4.34%	4.34%
Maturity		2021-05
Lake Vista Pointe [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 18,460	$ 18,460	18,460
Interest Rate	4.28%	4.28%
Maturity		2024-08
Florida Research Park [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 17,000	$ 17,000	$ 17,000
Interest Rate	4.44%	4.44%
Maturity		2024-12
Plaza 25 [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 17,000	$ 17,000
Interest Rate	4.10%	4.10%
Maturity		2025-07
190 Office Center [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 41,250	$ 41,250
Interest Rate	4.79%	4.79%
Maturity		2025-10
Intellicenter [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 33,563	$ 33,563
Interest Rate	4.65%	4.65%
Maturity		2025-10
London Interbank Offered Rate (LIBOR) [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Interest Rate, Description	6.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Secured indebtedness	$ 50,000	$ 50,000
Maturity		2018-06
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate, Description	2.75%

Debt - Summary of Secured Ind47

Debt - Summary of Secured Indebtedness (Parenthetical) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Jul. 14, 2015	Jul. 13, 2015
Term Loan [Member]
Debt Instrument [Line Items]
Minimum liquidity requirements	$ 3,000,000
Washington Group Plaza [Member]
Debt Instrument [Line Items]
Amortization period	360 months
Effective interest rate of loan	3.85%
AmberGlen Mortgage Loan [Member]
Debt Instrument [Line Items]
Minimum liquidity requirements	$ 2,000,000
Minimum net worth required	$ 25,000,000
Effective interest rate of loan	4.38%
Midland Life Insurance [Member]
Debt Instrument [Line Items]
Loan maturity date	May 6, 2021
Amortization period	360 months
Effective interest rate of loan	4.34%
Lake Vista Pointe [Member]
Debt Instrument [Line Items]
Amortization period	360 months
Effective interest rate of loan	4.28%
Florida Research Park [Member]
Debt Instrument [Line Items]
Minimum liquidity requirements	$ 1,700,000
Amortization period	360 months
Minimum net worth required	$ 17,000,000
Effective interest rate of loan	4.44%
Plaza 25 [Member]
Debt Instrument [Line Items]
Amortization period	360 months
Effective interest rate of loan	4.10%
190 Office Center [Member]
Debt Instrument [Line Items]
Effective interest rate of loan	4.79%
Intellicenter [Member]
Debt Instrument [Line Items]
Effective interest rate of loan	4.65%
London Interbank Offered Rate (LIBOR) [Member] | Intellicenter [Member]
Debt Instrument [Line Items]
One month LIBOR rate	0.40%
Maximum [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Leverage ratio	65.00%
Minimum [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	160.00%
Minimum [Member] | Florida Research Park [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	115.00%
Minimum [Member] | Plaza 25 [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	145.00%
Minimum [Member] | 190 Office Center [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	115.00%
Minimum [Member] | Intellicenter [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	120.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, authorized amount	$ 75,000,000	$ 75,000,000	$ 35,000,000
Revolving Credit Facility, outstanding amount	$ 50,000,000
Loan maturity date	Jun. 26, 2018
Loan expected extended maturity date	Jun. 26, 2019
Revolving Credit Facility, accordion feature	$ 150,000,000
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
One month LIBOR rate	0.40%
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	160.00%

Debt - Schedule of Principal Re

Debt - Schedule of Principal Repayments of Mortgage Payable (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
2,016	$ 16,034
2,017	3,036
2,018	85,161
2,019	26,629
2,020	3,917
Thereafter	209,894
Total principal repayments of mortgage payable	$ 344,671	$ 189,940

Fair Value of Financial Instr49

Fair Value of Financial Instruments - Additional Information (Detail)	1 Months Ended			8 Months Ended	12 Months Ended
	Jul. 31, 2016	Aug. 31, 2015USD ($)	Aug. 31, 2014USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2015USD ($)ft²$ / ft²
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Hedges or derivatives				$ 0	$ 0
Fair value, discount rate					8.00%
Approximate square feet of additional lease space | ft²					3,000
Percentage of lease space occupancy					88.00%
Average net effective rent per square foot | $ / ft²					14
Incremental operating costs per square foot | $ / ft²					4
Estimated fair value of earn-out liability				8,000,000	$ 5,678,000
Earn-out payment		$ 3,200,000	$ 3,200,000		3,163,000
Increase in fair value of earn-out				(1,048,000)	$ 841,000
Percentage of increase or decrease in potential gain or loss by varying the significant unobservable inputs					10.00%
Potential loss by varying the significant unobservable inputs					$ 100,000
Potential gain by varying the significant unobservable inputs					100,000
Mortgage loans payable, fair value				$ 192,500,000	$ 285,900,000
Scenario, Forecast [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Percentage of lease space occupancy	89.00%

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) $ / shares in Units, $ in Thousands	Aug. 06, 2015USD ($)	Dec. 23, 2014USD ($)$ / sharesshares	May. 09, 2014USD ($)shares	Apr. 21, 2014USD ($)	Mar. 31, 2016USD ($)	Aug. 31, 2015USD ($)	Aug. 31, 2014USD ($)	Dec. 31, 2015USD ($)Property$ / shares	Dec. 31, 2014USD ($)$ / shares
Related Party Transaction [Line Items]
Common stock price per share | $ / shares								$ 0.01	$ 0.01
Net proceeds from issuance of public offering				$ 63,400				$ 63,400
Earn-out payment						$ 3,200	$ 3,200	$ 3,163
Overallotment Option [Member]
Related Party Transaction [Line Items]
Common units and common stock redemption value, in cash			$ 9,100
Shares issued to underwriters under overallotment option | shares			782,150
Net proceeds from issuance of public offering			$ 9,100
Overallotment Option [Member] | Common Units [Member]
Related Party Transaction [Line Items]
Previously issued number of redeemable shares | shares			479,305
Overallotment Option [Member] | Common Stock [Member]
Related Party Transaction [Line Items]
Previously issued number of redeemable shares | shares			248,095
Secondary Public Offering, Over Allotment Option [Member]
Related Party Transaction [Line Items]
Shares issued to underwriters under overallotment option | shares		512,664
Common stock price per share | $ / shares		$ 12.50
Net proceeds from issuance of public offering		$ 6,100
Property Management Firm [Member]
Related Party Transaction [Line Items]
Property management fee, Description								Fee ranging from 3.0% to 3.5% of gross revenue
Number of real estate properties | Property								3
Management fees paid								$ 500	$ 400
Property Management Firm [Member] | Minimum [Member]
Related Party Transaction [Line Items]
Property management fee, percentage								3.00%
Property Management Firm [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Property management fee, percentage								3.50%
Advisor [Member]
Related Party Transaction [Line Items]
Advisory and transaction fees payable								$ 3,000	$ 1,500
Second City Group [Member]
Related Party Transaction [Line Items]
Formation transactions completed date								Apr. 21, 2014
Consideration for formation transactions								$ 19,400
Additional payments to Second City reimbursement of IPO								4,900
Additional payments to the Second City Group for working capital								$ 1,800
Earn-out payment	$ 3,200
Second City Group [Member] | Overallotment Option [Member]
Related Party Transaction [Line Items]
Common units and common stock redemption value, in cash			$ 9,100
Second City Group [Member] | Overallotment Option [Member] | Common Units [Member]
Related Party Transaction [Line Items]
Previously issued number of redeemable shares | shares			479,305
Second City Group [Member] | Overallotment Option [Member] | Common Stock [Member]
Related Party Transaction [Line Items]
Previously issued number of redeemable shares | shares			248,095
Second City Group [Member] | Secondary Public Offering, Over Allotment Option [Member]
Related Party Transaction [Line Items]
Common units and common stock redemption value, in cash		$ 6,100
Second City Group [Member] | Secondary Public Offering, Over Allotment Option [Member] | Common Units [Member]
Related Party Transaction [Line Items]
Previously issued number of redeemable shares | shares		336,195
Second City Group [Member] | Secondary Public Offering, Over Allotment Option [Member] | Common Stock [Member]
Related Party Transaction [Line Items]
Previously issued number of redeemable shares | shares		176,469
Second City Group [Member] | Scenario, Forecast [Member]
Related Party Transaction [Line Items]
Earn-out payment					$ 3,800

Future Minimum Rent Schedule -

Future Minimum Rent Schedule - Schedule of Future Minimum Lease Payments under Noncancellable Operating Leases (Detail) $ in Thousands	Dec. 31, 2015USD ($)
Leases [Abstract]
2,016	$ 52,702
2,017	51,421
2,018	44,135
2,019	38,224
2,020	34,882
Thereafter	132,466
Total future minimum lease payments to be received	$ 353,830

Future Minimum Rent Schedule 52

Future Minimum Rent Schedule - Additional Information (Detail)	Dec. 31, 2015
Sales Revenue, Services, Net [Member] | Government Contracts Concentration Risk [Member]
Schedule Of Operating Leases Future Minimum Payments Receivable [Line Items]
Percentage of total future minimum lease payments	19.70%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	Aug. 06, 2015	Mar. 31, 2016	Aug. 31, 2015	Aug. 31, 2014	Dec. 31, 2014	Dec. 31, 2015
Other Commitments [Line Items]
Earn-out payment			$ 3,200	$ 3,200		$ 3,163
Estimated fair value of earn-out liability					$ 8,000	5,678
Increase in fair value of earn-out					$ (1,048)	$ 841
Central Fairwinds [Member]
Other Commitments [Line Items]
Stabilized capitalization rate						7.75%
Earn-Out Payment, Description						The Company will make any additional Earn-Out Payment within 30 days of the end of the Earn-Out Term based on new qualified leases entered into since the achievement of the last Earn-Out Threshold.
Earn-out payment	$ 3,200
Central Fairwinds [Member] | Scenario, Forecast [Member]
Other Commitments [Line Items]
Earn-out payment		$ 3,800
Central Fairwinds [Member] | Range 1 [Member]
Other Commitments [Line Items]
Percentage of Earn-Out Threshold						70.00%
Central Fairwinds [Member] | Range 2 [Member]
Other Commitments [Line Items]
Percentage of Earn-Out Threshold						80.00%
Central Fairwinds [Member] | Range 3 [Member]
Other Commitments [Line Items]
Percentage of Earn-Out Threshold						90.00%
Central Fairwinds [Member] | Maximum [Member]
Other Commitments [Line Items]
Earn-Out payment period						5 years

Stockholder's Equity - Addition

Stockholder's Equity - Additional Information (Detail) $ / shares in Units, $ in Millions	Dec. 31, 2015$ / sharesshares	Dec. 31, 2014$ / sharesshares	Dec. 23, 2014USD ($)$ / sharesshares	Dec. 10, 2014USD ($)$ / sharesshares	May. 09, 2014USD ($)shares	Apr. 21, 2014USD ($)$ / sharesshares	Dec. 31, 2015USD ($)Installment$ / sharesshares	Dec. 31, 2014USD ($)$ / sharesshares
Class of Stock [Line Items]
Common stock issued in IPO, shares | shares						5,800,000	5,800,000
Net proceeds from IPO						$ 63.4	$ 63.4
Common stock issued | shares	12,517,777	12,279,110					12,517,777	12,279,110
Common stock price per share | $ / shares	$ 0.01	$ 0.01					$ 0.01	$ 0.01
Gross proceeds from issuance of public offering						72.5
Underwriting discounts						5.1
Other expenses relating to offering						$ 4
Operating Partnership common units | shares	3,070,405	2,915,709
Percentage of interest in Operating Partnership	19.70%	19.20%					19.70%	19.20%
Partnership unit, description							Beginning on or after the date which is 12 months after the later of the completion of the initial public offering or the date on which a person first became a holder of common units, each limited partner and assignees of limited partners will have the right, subject to the terms and conditions set forth in the partnership agreement, to require the Operating Partnership to redeem all or a portion of the common units held by such limited partner or assignee in exchange for a cash amount per common unit equal to the value of one share of common stock, determined in accordance with and subject to adjustment under the partnership agreement. The Company has the sole option at its discretion to redeem the common units by issuing common stock on a one-for-one basis.
Aggregate cash distributions declared							$ 14.5
Aggregate cash distributions paid							$ 10.8	$ 3.7
Maximum number of shares issued under Equity Incentive Plan | shares							1,263,580
Restricted Stock Units (RSUs) [Member]
Class of Stock [Line Items]
Restricted stock units granted to executive officers, directors and non-executive employees of the Advisor | shares						352,272
Restricted stock units grant date fair value | $ / shares						$ 12.50
Restricted stock units, value						$ 4.4
Net compensation expense							$ 1.9	$ 1.1
Number of annual installments for award vesting | Installment							3
Restricted Stock Units (RSUs) [Member] | Directors and Non-Executive Employees [Member]
Class of Stock [Line Items]
Restricted stock units granted to executive officers, directors and non-executive employees of the Advisor | shares							43,667	30,100
Restricted stock units grant date fair value							$ 0.6	$ 0.4
Overallotment Option [Member]
Class of Stock [Line Items]
Net proceeds from IPO					$ 9.1
Shares issued to underwriters under overallotment option | shares					782,150
Gross proceeds from issuance of public offering					$ 9.8
Underwriting discounts					$ 0.7
Overallotment Option [Member] | Common Units [Member]
Class of Stock [Line Items]
Previously issued number of redeemable shares | shares					479,305
Overallotment Option [Member] | Common Stock [Member]
Class of Stock [Line Items]
Previously issued number of redeemable shares | shares					248,095
Secondary Public Offering Total [Member]
Class of Stock [Line Items]
Net proceeds from IPO				$ 43.6
Shares issued to underwriters under overallotment option | shares			512,664
Common stock issued | shares				3,750,000
Common stock price per share | $ / shares				$ 12.50
Gross proceeds from issuance of public offering				$ 46.9
Underwriting discounts				2.6
Other expenses relating to offering				$ 0.7
Secondary Public Offering Total [Member] | Common Units [Member]
Class of Stock [Line Items]
Previously issued number of redeemable shares | shares			336,195
Secondary Public Offering Total [Member] | Common Stock [Member]
Class of Stock [Line Items]
Previously issued number of redeemable shares | shares			176,469
Secondary Public Offering, Over Allotment Option [Member]
Class of Stock [Line Items]
Net proceeds from IPO			$ 6.1
Shares issued to underwriters under overallotment option | shares			512,664
Common stock price per share | $ / shares			$ 12.50
Gross proceeds from issuance of public offering			$ 6.4
Underwriting discounts			$ 0.3

Stockholder's Equity - Summary

Stockholder's Equity - Summary of Noncontrolling Interests in Properties (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Noncontrolling Interest [Line Items]
Noncontrolling interests in properties	$ (675)	$ (754)
City Center [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in properties	(5)	32
Central Fairwinds [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in properties	484	422
AmberGlen [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interests in properties	$ (1,154)	$ (1,208)

Stockholder's Equity - Schedule

Stockholder's Equity - Schedule of Distributions Declared Per Share and Per Unit (Detail)	12 Months Ended
	Dec. 31, 2015$ / shares
Dividends Payable [Line Items]
Distribution per Share/Unit	$ 0.940
January 1, 2015 - March 31, 2015 [Member]
Dividends Payable [Line Items]
Distribution per Share/Unit	$ 0.235
Declaration Date	Mar. 19, 2015
Record Date	Apr. 3, 2015
Payment Date	Apr. 17, 2015
April 1, 2015 - June 30, 2015 [Member]
Dividends Payable [Line Items]
Distribution per Share/Unit	$ 0.235
Declaration Date	Jun. 15, 2015
Record Date	Jul. 3, 2015
Payment Date	Jul. 17, 2015
July 1, 2015 - September 30, 2015 [Member]
Dividends Payable [Line Items]
Distribution per Share/Unit	$ 0.235
Declaration Date	Sep. 15, 2015
Record Date	Oct. 5, 2015
Payment Date	Oct. 19, 2015
October 1, 2015 - December 31, 2015 [Member]
Dividends Payable [Line Items]
Distribution per Share/Unit	$ 0.235
Declaration Date	Dec. 18, 2015
Record Date	Jan. 6, 2016
Payment Date	Jan. 20, 2016

Quarterly Financial Informati57

Quarterly Financial Information - Summary of Selected Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								8 Months Ended	12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Operating revenue	$ 17,543	$ 14,616	$ 11,634	$ 11,259	$ 10,529	$ 9,998	$ 8,393	$ 7,976	$ 27,133	$ 55,052
Net (loss)/income	(1,798)	(2,984)	(2,086)	(799)	(1,673)	(2,374)	(3,067)	$ 2,204	(6,854)	$ (7,667)
Net loss attributable to stockholders	$ (1,551)	$ (2,499)	$ (1,798)	$ (743)	$ (1,299)	$ (1,767)	$ (1,944)		$ (5,010)
Net loss per share	$ (0.12)	$ (0.20)	$ (0.15)	$ (0.06)	$ (0.14)	$ (0.22)	$ (0.24)			$ (0.53)

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ in Thousands	Feb. 01, 2016	Apr. 21, 2014	Dec. 31, 2015	Mar. 01, 2016
Subsequent Event [Line Items]
Additional cash payment for business acquisition		$ 19,400
Second City Funds [Member] | Subsequent Event [Member] | Administrative Services Agreement [Member]
Subsequent Event [Line Items]
Annual payment receivable for services	$ 3,250
Administrative service agreement, term	3 years
Second City Funds [Member] | First 12 months [Member] | Subsequent Event [Member] | Administrative Services Agreement [Member]
Subsequent Event [Line Items]
Annual payment receivable for services	$ 1,500
Second City Funds [Member] | Second 12 months [Member] | Subsequent Event [Member] | Administrative Services Agreement [Member]
Subsequent Event [Line Items]
Annual payment receivable for services	1,125
Second City Funds [Member] | Third 12 months [Member] | Subsequent Event [Member] | Administrative Services Agreement [Member]
Subsequent Event [Line Items]
Annual payment receivable for services	$ 625
External Advisor, City Office Real Estate Management, Inc [Member] | Stock Purchase Agreement [Member]
Subsequent Event [Line Items]
Business acquisition announced date			Nov. 2, 2015
External Advisor, City Office Real Estate Management, Inc [Member] | Subsequent Event [Member] | Stock Purchase Agreement [Member]
Subsequent Event [Line Items]
Business acquisition effective date	Feb. 1, 2016
Common stock acquired, shares issued	297,321
Additional cash payment for business acquisition	$ 3,500
Diluted market capitalization				$ 200,800
External Advisor, City Office Real Estate Management, Inc [Member] | Subsequent Event [Member] | Thresholds Payment Condition 1 [Member] | Stock Purchase Agreement [Member]
Subsequent Event [Line Items]
Additional cash payment for business acquisition	1,000
Diluted market capitalization	200,000
External Advisor, City Office Real Estate Management, Inc [Member] | Subsequent Event [Member] | Thresholds Payment Condition 2 [Member] | Stock Purchase Agreement [Member]
Subsequent Event [Line Items]
Additional cash payment for business acquisition	1,000
Diluted market capitalization	225,000
External Advisor, City Office Real Estate Management, Inc [Member] | Subsequent Event [Member] | Thresholds Payment Condition 3 [Member] | Stock Purchase Agreement [Member]
Subsequent Event [Line Items]
Additional cash payment for business acquisition	1,500
Diluted market capitalization	$ 250,000

Schedule III - Real Estate Pr59

Schedule III - Real Estate Properties and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 281,753
Initial Cost to Company, Land	90,205
Initial Cost to Company, Buildings and Improvements	271,582
Costs Capitalized Subsequent to Acquisitions, Improvements	20,002
Gross Amount, Land	90,205
Gross Amount, Building and Improvements	291,584
Gross Amount, Total	381,789	$ 227,139	$ 107,862
Accumulated Amortization	26,909	$ 15,311	$ 7,735
AmberGlen [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	25,158
Initial Cost to Company, Land	8,790
Initial Cost to Company, Buildings and Improvements	5,705
Costs Capitalized Subsequent to Acquisitions, Improvements	3,463
Gross Amount, Land	8,790
Gross Amount, Building and Improvements	9,168
Gross Amount, Total	17,958
Accumulated Amortization	$ 4,410
Date Acquired	2009-12
Depreciation Life for the Latest Income Statement	50 years
AmberGlen [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1,984
AmberGlen [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1,998
City Center Property [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 24,500
Initial Cost to Company, Land	3,123
Initial Cost to Company, Buildings and Improvements	10,656
Costs Capitalized Subsequent to Acquisitions, Improvements	8,547
Gross Amount, Land	3,123
Gross Amount, Building and Improvements	19,203
Gross Amount, Total	22,326
Accumulated Amortization	$ 4,685
Date of Construction	1,984
Date Acquired	2010-12
Depreciation Life for the Latest Income Statement	40 years
Central Fairwinds [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Land	$ 1,747
Initial Cost to Company, Buildings and Improvements	9,751
Costs Capitalized Subsequent to Acquisitions, Improvements	3,625
Gross Amount, Land	1,747
Gross Amount, Building and Improvements	13,376
Gross Amount, Total	15,123
Accumulated Amortization	$ 1,816
Date of Construction	1,982
Date Acquired	2012-05
Depreciation Life for the Latest Income Statement	40 years
Corporate Parkway [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 20,500
Initial Cost to Company, Land	3,757
Initial Cost to Company, Buildings and Improvements	20,489
Costs Capitalized Subsequent to Acquisitions, Improvements	112
Gross Amount, Land	3,757
Gross Amount, Building and Improvements	20,601
Gross Amount, Total	24,358
Accumulated Amortization	$ 3,175
Date of Construction	2,006
Date Acquired	2013-05
Depreciation Life for the Latest Income Statement	43 years
Washington Group Plaza [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 34,322
Initial Cost to Company, Land	12,748
Initial Cost to Company, Buildings and Improvements	20,716
Costs Capitalized Subsequent to Acquisitions, Improvements	2,947
Gross Amount, Land	12,748
Gross Amount, Building and Improvements	23,663
Gross Amount, Total	36,411
Accumulated Amortization	$ 3,966
Date Acquired	2013-06
Depreciation Life for the Latest Income Statement	29 years
Washington Group Plaza [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1,970
Washington Group Plaza [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1,982
Cherry Creek [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 50,000
Initial Cost to Company, Land	25,745
Initial Cost to Company, Buildings and Improvements	20,144
Costs Capitalized Subsequent to Acquisitions, Improvements	239
Gross Amount, Land	25,745
Gross Amount, Building and Improvements	20,383
Gross Amount, Total	46,128
Accumulated Amortization	$ 2,580
Date Acquired	2014-01
Depreciation Life for the Latest Income Statement	36 years
Cherry Creek [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1,962
Cherry Creek [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1,980
Plaza 25 [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 17,000
Initial Cost to Company, Land	1,764
Initial Cost to Company, Buildings and Improvements	20,563
Costs Capitalized Subsequent to Acquisitions, Improvements	441
Gross Amount, Land	1,764
Gross Amount, Building and Improvements	21,004
Gross Amount, Total	22,768
Accumulated Amortization	$ 1,960
Date of Construction	1,981
Date Acquired	2014-06
Depreciation Life for the Latest Income Statement	30 years
Lake Vista Pointe [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 18,460
Initial Cost to Company, Land	4,115
Initial Cost to Company, Buildings and Improvements	20,600
Gross Amount, Land	4,115
Gross Amount, Building and Improvements	20,600
Gross Amount, Total	24,715
Accumulated Amortization	$ 1,377
Date of Construction	2,007
Date Acquired	2014-07
Depreciation Life for the Latest Income Statement	45 years
Florida Research Park [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 17,000
Initial Cost to Company, Land	4,415
Initial Cost to Company, Buildings and Improvements	17,775
Gross Amount, Land	4,415
Gross Amount, Building and Improvements	17,775
Gross Amount, Total	22,190
Accumulated Amortization	$ 789
Date of Construction	1,999
Date Acquired	2014-11
Depreciation Life for the Latest Income Statement	40 years
Logan Tower [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Land	$ 1,305
Initial Cost to Company, Buildings and Improvements	8,197
Costs Capitalized Subsequent to Acquisitions, Improvements	103
Gross Amount, Land	1,305
Gross Amount, Building and Improvements	8,300
Gross Amount, Total	9,605
Accumulated Amortization	$ 337
Date of Construction	1,983
Date Acquired	2015-02
Depreciation Life for the Latest Income Statement	33 years
Superior Pointe [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Land	$ 3,153
Initial Cost to Company, Buildings and Improvements	19,834
Costs Capitalized Subsequent to Acquisitions, Improvements	388
Gross Amount, Land	3,153
Gross Amount, Building and Improvements	20,222
Gross Amount, Total	23,375
Accumulated Amortization	$ 460
Date of Construction	2,000
Date Acquired	2015-06
Depreciation Life for the Latest Income Statement	40 years
DTC Crossroads [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Land	$ 7,137
Initial Cost to Company, Buildings and Improvements	23,184
Costs Capitalized Subsequent to Acquisitions, Improvements	117
Gross Amount, Land	7,137
Gross Amount, Building and Improvements	23,301
Gross Amount, Total	30,438
Accumulated Amortization	$ 437
Date of Construction	1,999
Date Acquired	2015-06
Depreciation Life for the Latest Income Statement	33 years
190 Office Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 41,250
Initial Cost to Company, Land	7,162
Initial Cost to Company, Buildings and Improvements	39,690
Costs Capitalized Subsequent to Acquisitions, Improvements	20
Gross Amount, Land	7,162
Gross Amount, Building and Improvements	39,710
Gross Amount, Total	46,872
Accumulated Amortization	$ 550
Date Acquired	2015-09
Depreciation Life for the Latest Income Statement	45 years
190 Office Center [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2,001
190 Office Center [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2,008
Intellicenter [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Cost to Company, Encumbrances	$ 33,563
Initial Cost to Company, Land	5,244
Initial Cost to Company, Buildings and Improvements	34,278
Gross Amount, Land	5,244
Gross Amount, Building and Improvements	34,278
Gross Amount, Total	39,522
Accumulated Amortization	$ 367
Date of Construction	2,008
Date Acquired	2015-09
Depreciation Life for the Latest Income Statement	50 years

Schedule III - Real Estate Pr60

Schedule III - Real Estate Properties and Accumulated Depreciation (Parenthetical) (Detail) $ in Thousands	Dec. 31, 2015USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Real estate assets, aggregate cost for federal tax purpose	$ 445,353

Schedule III - Summary of Real

Schedule III - Summary of Real Estate and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Real Estate Properties
Balance, beginning of year	$ 227,139	$ 107,862
Acquisitions	149,184	115,121
Capital improvements	5,466	4,156
Balance, end of year	381,789	227,139
Accumulated depreciation
Balance, beginning of year	15,311	7,735
Depreciation	11,598	7,576
Balance, end of year	$ 26,909	$ 15,311